Patent Publication Number: US-2022230040-A1

Title: Radio frequency identification (rfid) tag with deactivatable link

Description:
BACKGROUND 
     Technical Field 
     The present disclosure relates generally to Electronic Article Surveillance (“EAS”), and more particularly, to examples related to EAS using a Radio Frequency Identification (“RFID”) tag with a deactivatable link. 
     Introduction 
     EAS systems are used to control inventory and to prevent or deter theft or unauthorized removal of articles from a controlled area. Such systems establish an electromagnetic field or “interrogation zone” that defines a surveillance zone (for example, entrances and/or exits in retail stores) encompassing the controlled area. The articles to be protected are tagged with an EAS security tag. Tags are designed to interact with the field in the interrogation zone, e.g., established by an EAS portal. The EAS portal includes one or more EAS readers (e.g., transmitter/receiver, antennas), and an EAS detection module/controller. The presence of a tag in the interrogation zone is detected by the system and appropriate action is taken. In most cases, the appropriate action includes the activation of an alarm. 
     In the retail industry, it is common to “source tag” articles with RFID tags, either at the time of packaging/manufacture, or at some other point in the supply chain. At the same time, EAS technology and devices have proven critical to the reduction of theft and so called “shrinkage.” Since many articles arrive at the retailer with RFID tags, it is desirable that RFID tags be used also to provide EAS functionality in addition to their intended function of providing capabilities such as inventory control, shelf reading, non-line of sight reading, etc. 
     In some implementations, an RFID tag can be used to simulate EAS functionality by sending special codes when a reader interrogates the RFID tag. This arrangement advantageously eliminates the need for a separate EAS component, such as an acousto-magnetic (“AM”) component, within the tag, or a separate EAS tag. Various schemes can be used to enable the use of RFID tags to simulate EAS functionality. In some such systems, the RFID tag indicates in some way that the item to which the tag is attached has been purchased at point of sale (“POS”). If the RFID tag is a detachable tag, the RFID tag can be simply detached at the point of sale. In such a system, the RFID readers at the exit would trigger an alarm if any tags are detected. In some such systems, data is written to the RFID chip at the POS to confirm the item was purchased. One common method is encoding a bit-flip at the POS, with the changed bit indicating that the item is authorized for removal. Other systems may read a unique ID from the tag, and store the unique ID in the enterprise system when the tagged item is purchased, so that the purchase can be verified by RFID readers as the tag exits the premises. If the purchase of the item cannot be verified based on tag data when the tag passes out of the store, an alarm can be triggered. 
     SUMMARY 
     The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. 
     An example implementation includes an EAS tag comprising an antenna, an RFID chip configured to transmit and/or receive a wireless signal via the antenna, and a magnetically-actuatable switch. The magnetically-actuatable switch is configured to move between a first position and a second position. The switch is further configured to electrically couple the RFID chip to the antenna in the first position. Additionally, the switch is further configured to electrically decouple the RFID chip from the antenna in the second position. 
     Another example implementation includes an EAS tag comprising a circuit board, an electrically conductive trace formed on the circuit board and configured to define an antenna, an RFID chip mounted on the circuit board and electrically coupled to the antenna, a magnetic or dielectric layer disposed on the circuit board, and a field modulated layer disposed on the circuit board and having a first property and a second property. The RFID chip is configured to transmit and/or receive a wireless signal via the antenna. The first property of the field modulated layer interacts with the magnetic or dielectric layer and the antenna to enable the RFID chip to transmit and/or receive the wireless signal. The second property of the field modulated layer interacts with the magnetic or dielectric layer and the antenna to disable the RFID chip to transmit and/or receive the wireless signal. 
     Another example implementation includes an EAS tag comprising an antenna, an RFID chip configured to transmit and/or receive a wireless signal via the antenna, and a radio frequency-actuatable switch disposed between the antenna and the RFID chip. The switch is configured to electrically couple the RFID chip to the antenna in a first state. The switch is further configured to electrically decouple the RFID chip to the antenna in a second state. 
     Another example implementation includes a method for operating an EAS tag, comprising performing, by a communication element of the EAS tag using an antenna of the EAS tag, communication operations with an EAS system based on a movable switch of the EAS tag being in a first position that electrically couples the communication element to the antenna. The method further includes preventing the communication element from performing the communication operations with the EAS system by changing a position of the movable switch from the first position to a second position that electrically decouples the communication element from the antenna. 
     To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagram of an illustrative architecture for a system, in accordance with various aspects of the present disclosure. 
         FIG. 2  is a diagram of an illustrative architecture for a tag, in accordance with various aspects of the present disclosure. 
         FIG. 3  is a diagram of an illustrative architecture for a tag reader, in accordance with various aspects of the present disclosure. 
         FIG. 4  is a diagram of an illustrative architecture for a server, in accordance with various aspects of the present disclosure. 
         FIG. 5  is an illustration of an example architecture for an RFID tag with a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 6  is a diagram illustrating a first example of a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 7  is an illustration of a second example of a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 8  is a diagram illustrating a third example of a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 9  is an illustration of a fourth example of a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 10  is a diagram illustrating another example architecture for an RFID tag with a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 11  is a diagram illustrating an example apparatus, such as an EAS tag, with a deactivatable link, in accordance with various aspects of the present disclosure. 
         FIG. 12  is a flowchart of an example method for operating an EAS tag, in accordance with various aspects of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     It will be readily understood that the components of the aspects as generally described herein and illustrated in the appended figures could be arranged and designed in a wide variety of different configurations. Thus, the following more detailed description of various aspects, as represented in the figures, is not intended to limit the scope of the present disclosure, but is merely representative of various aspects. While the various aspects of the aspects are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated. 
     The present solution may be embodied in other specific forms without departing from its spirit or essential characteristics. The described aspects are to be considered in all respects only as illustrative and not restrictive. The scope of the present solution is indicated by the appended claims rather than by this detailed description. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope. 
     Reference throughout this specification to features, advantages, or similar language does not imply that all of the features and advantages that may be realized with the present solution should be or are in any single aspect of the present solution. Rather, language referring to the features and advantages is understood to mean that a specific feature, advantage, or characteristic described in connection with an aspect is included in at least one aspect of the present solution. Thus, discussions of the features and advantages, and similar language, throughout the specification may, but do not necessarily, refer to the same aspect. 
     Furthermore, the described features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more aspects. One skilled in the relevant art will recognize, in light of the description herein, that the present solution can be practiced without one or more of the specific features or advantages of a particular aspect. In other instances, additional features and advantages may be recognized in certain aspects that may not be present in all aspects of the present solution. 
     Reference throughout this specification to “one aspect,” “an aspect,” or similar language means that a particular feature, structure, or characteristic described in connection with the indicated aspect is included in at least one aspect of the present solution. Thus, the phrases “in one aspect”, “in an aspect,” and similar language throughout this specification may, but do not necessarily, all refer to the same aspect. 
     As used in this document, the singular form “a,” “an,” and “the” include plural references unless the context clearly dictates otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art. As used in this document, the term “comprising” means “including, but not limited to.” 
     A POS device in a conventional EAS system may communicate with an RFID tag to deactivate the RFID chip of the RFID tag to confirm that the item associated with the RFID tag is authorized for removal from a premise (e.g., a retail store facility). For example, the POS device may communicate with the RFID tag and cause the RFID chip to enter into an unrecoverable deactivated state. That is, the RFID chip may not be re-activated after entering the unrecoverable deactivated state. In another example, the POS device may communicate with the RFID tag and cause the RFID chip to enter into a recoverable deactivated state. For example, the RFID chip may be returned to an active state after providing a password or other code value(s). In yet another example, the POS device may deactivate the RFID chip by modifying a signal reception parameter or configuration of the RFID chip (e.g., signal sensitivity) such that the RFID chip may be unable to receive RF signals. As such, the modified RFID chip may behave in a manner similar to a deactivated RFID chip in that the modified RFID chip may not respond to RF signals. In some aspects, the modified RFID chip may be able to receive RF signals only if or when a transmitting antenna is in very close proximity to, or in contact with, the RFID tag. However, conventional processes to deactivate the RFID chip may take several hundred milliseconds to complete, or may take longer than one second if or when the process needs to be restarted or retried. Such conventional EAS systems may not be practical for a retail store facility given the time delay introduced by the deactivation process. For example, such time delays may negatively impact a purchasing experience by requiring that each to-be-purchased item be held for a second or more at a POS device, rather than quickly passing the items across a scanner. 
     Alternatively or additionally, a conventional EAS system may electronically acknowledge that an item has been purchased at the POS and transmit a signal over a network to an exit system to prevent triggering of an alarm. For example, a unique ID from the RFID tag may be read and stored such that the purchase can be verified by RFID readers as the RFID tag exits the premises. As such, the exit system may not trigger an alarm as the purchased item is taken out of the retail store facility. However, a conventional EAS system may suffer from false alarms due to network issues, such as network lag, or other complexities. In addition, another EAS system at another retail store facility may not be aware of the purchase and may trigger an alarm if or when the purchased item is returned to that retail store facility. 
     Examples of the technology disclosed herein provide for multiple manners to deactivate an RFID tag at a POS by deactivating a link between the RFID chip and an antenna. In certain aspects, the RFID tag may comprise a switch configured to electrically couple and/or decouple the RFID chip of the RFID tag to the antenna of the RFID tag. Further, aspects presented herein may reduce complexity and may reduce scanning time delays over conventional EAS systems. 
     These and other features of the present disclosure are discussed in detail below with regard to  FIGS. 1-12 . 
     Referring now to  FIG. 1 , there is provided a schematic illustration of an illustrative system  100  that is useful for understanding the present solution. The present solution is described herein in relation to a retail store environment. The present solution is not limited in this regard, and can be used in other environments. For example, the present solution can be used in distribution centers, factories and other commercial environments. Notably, the present solution can be employed in any environment in which objects and/or items/articles need to be located and/or tracked. 
     The system  100  is generally configured to allow (a) improved inventory counts and surveillance of objects and/or items/articles located within a facility, and (b) improved customer experiences. As shown in  FIG. 1 , system  100  comprises a Retail Store Facility (“RSF”)  128  in which display equipment  102   1 - 102   M  is disposed. The display equipment is provided for displaying objects (or items/articles)  110   1 - 110   N ,  116   1 - 116   X  to customers of the retail store. The display equipment can include, but is not limited to, shelves, article display cabinets, promotional displays, fixtures, and/or equipment securing areas of the RSF  128 . The RSF  128  can also include emergency equipment (not shown), checkout counters, and other equipment and fixtures typical for the facility type. Emergency equipment, checkout counters, video cameras, people counters, and conventional EAS systems are well known in the art, and therefore may not be described at a sufficient level of detail herein for understanding of the claimed invention. 
     At least one tag reader  120  is provided to assist in counting and tracking locations the articles  110   1 - 110   N ,  116   1 - 116   X  within the RSF  128 . The tag reader  120  comprises an RFID reader configured to read RFID tags. RFID readers are well known in the art, and therefore will be described at a sufficient level of detail herein for understanding of the claimed invention. 
     RFID tags  112   1 - 112   N ,  118   1 - 118   X  (hereinafter “ 112 ,” generally) are respectively attached or coupled to the articles  110   1 - 110   N ,  116   1 - 116   X  (hereinafter “ 110 ,” generally). This coupling can be achieved via an adhesive (e.g., glue, tape, or sticker), a mechanical coupler (e.g., straps, clamps, snaps, etc.), a weld, chemical bond, or other means. The RFID tags  112  can alternatively or additionally comprise dual-technology tags that have both EAS and RFID capabilities as described herein. 
     Notably, the tag reader  120  is strategically placed at a known location within the RSF  128 , for example, at an exit/entrance. By correlating the tag reader&#39;s RFID tag reads and the tag reader&#39;s known location within the RSF  128 , it is possible to determine the general location of articles  110  within the RSF  128 . The tag reader&#39;s known coverage area also facilitates article  110  location determinations. Accordingly, RFID tag read information and tag reader  120  location information is stored in a datastore  126 . This information can be stored in the datastore  126  using a server  124  and network  144  (e.g., an Intranet and/or Internet). 
     System  100  also comprises a Mobile Communication Device (“MCD”)  130 . MCD  130  includes, but is not limited to, a cell phone, a smart phone, a table computer, a personal digital assistant, and/or a wearable device (e.g., a smart watch). Each of the listed devices is well known in the art, and therefore will not be described herein. In accordance with some examples, the MCD  130  has a software application installed thereon that is operative to: facilitate the provision of various information  134 - 142  to the individual  152 ; facilitate a purchase transaction; and/or facilitate the detachment of the RFID tags  112  from the articles  110 ; and/or facilitate the detachment of an anchored chain or cable from the articles  110 . 
     The MCD  130  is generally configured to provide a visual and/or auditory output of item/article level information  134 , accessory information  136 , related product information  138 , discount information  140 , and/or customer related information  142 . The item level information includes, but is not limited to, an item description, item nutritional information, a promotional message, an item regular price, an item sale price, a currency symbol, and/or a source of the item. 
     An accessory includes, but is not limited to, a useful auxiliary item that can be attached to or removed from an item/article (e.g., a drill bit or battery of a drill). The accessory information includes, but is not limited to, an accessory description, accessory nutritional information, a promotional message, an accessory regular price, an accessory sale price, a currency symbol, a source of the accessory, and/or an accessory location in the facility. 
     A related product includes, but is not limited to, a product/article that can be used in conjunction with or as an alternative to another product/article (e.g., diaper rash cream which can be used when changing a diaper, or a first diaper can be used as an alternative to another diaper). The related product information includes, but is not limited to, a related product description, related product nutritional information, a promotional message, a related product regular price, a related product sale price, a currency symbol, a source of the related product, and/or a related product location in the facility. 
     The discount information can include, but is not limited to, a discount price for an article/product based on a loyalty level or other criteria. The customer related information includes, but is not limited to, customer account numbers, customer identifiers, usernames, passwords, payment information, loyalty levels, historical purchase information, and/or activity trends. 
     The item level information, accessory information, related product information and/or discount information can be output in a format selected from a plurality of formats based on a geographic location of the item/article  110 , a location of the MCD, a date, and/or an item pricing status (i.e., whether the item/article is on sale). In a display context, the format is defined by a font parameter, a color parameter, a brightness parameter, and/or a display blinking parameter. In an auditory context, the format is defined by a volume parameter, a voice tone parameter, and/or a male/female voice selected parameter. 
     The MCD  130  can also be configured to read barcodes and/or RFID tags  112 . 
     Information obtained from the barcode and/or RFID tag reads may be communicated from the MCD  130  to the server  124  via network  144 . Similarly, the stored information  134 - 142  is provided from the server  124  to the MCD  130  via network  144 . The network  144  includes an Intranet and/or the Internet. 
     Server  124  can be local to the facility  128  as shown in  FIG. 1  or remote from the facility  128 . Server  124  will be described in more detail below in relation to  FIG. 4 . Still, it should be understood that server  124  is configured to: write data to and read data from datastore  126 , RFID tags  112 , and/or MCD  130 ; perform language and currency conversion operations using item level information and/or accessory information obtained from the datastore, RFID tags  112 , and/or MCD; perform data analytics based on inventory information, tag read information, MCD tracking information, and/or information  134 - 142 ; perform image processing using images captured by camera(s)  148 ; and/or determine locations of RFID tags  112  and/or MCDs in the RSF  128  using beacon(s)  146 , tag reader  120  or other devices having known locations and/or antenna patterns. 
     In some examples, one or more beacons  146  transmitting an RF signal (second RF signal that is non-RFID) other than the RFID interrogation signal are placed to cover a zone of interest also covered by a tag reader  120  placed to cover an RFID interrogation zone, e.g., at a portal of the retail facility  128 . The system  100  can detect and derive any number of relevant indicators based on second RF signal. The tag  112  response to the second RF signal is analyzed and compared to data collected by the RFID signal response that occurred concurrently with tag  112  passage through the portal. 
     The server  124  facilitates updates to the information  134 - 142  output from the MCD  130 . Such information updating can be performed periodically, in response to instructions received from an associate (e.g., a retail store employee  132 ), in response to a detected change in the item level, accessory and/or related product information, in response to a detection that an individual is in proximity to an RFID tag  112 , and/or in esponse to any motion or movement of the RFID tag  112 . For example, if a certain product/article is placed on sale, then the sale price for that product/article is transmitted to MCD  130  via network  144  and/or RFID tag  112 . The sale price is then output from the MCD  130 . The present solution is not limited to the particulars of this example. 
     Although a single MCD  130  and/or a single server  124  are shown in  FIG. 1 , the present solution is not limited in this regard. It is contemplated that more than one computing device can be implemented. In addition, the present solution is not limited to the illustrative system architecture described in relation to  FIG. 1 . 
     During operation of system  100 , the content displayed on the display screen of the MCD  130  is dynamically controlled based upon various tag  112  or item  110  related information and/or customer related information (e.g., mobile device identifier, mobile device  130  location in RSF  128 , and/or customer loyalty level). Tag  112  or item level information includes, but is not limited to, first information indicating that an RFID tag  112  is in motion or that an article  110  is being handled by an individual  152 , second information indicating a current location of the RFID tag  112  and/or the MCD  130 , third information indicating an accessory or related product of the article  110  to which the moving RFID tag  112  is coupled, and/or fourth information indicating the relative locations of the accessory and the moving RFID tag  112  and/or the relative locations of the related article  110  and the moving RFID tag  112 . The first, second and fourth information can be derived based on sensor data generated by sensors local to the RFID tag  112 . Accordingly, the RFID tags  112  include one or more sensors to detect their current locations, detect any individual in proximity thereto, and/or detect any motion or movement thereof. The sensors include, but are not limited to, an Inertial Measurement Unit (“IMU”), a vibration sensor, a light sensor, an accelerometer, a gyroscope, a proximity sensor, a microphone, and/or a beacon communication device. The third information can be stored local to the RFID tags  112  or in a remote datastore  126  as information  136 ,  138 . 
     In some scenarios, the MCD  130  facilitates the server&#39;s  124  (a) detection of when the individual  152  enters the RSF  128 , (b) tracking of the individual&#39;s movement through the RSF, (c) detection of when the individual is in proximity to an article  110  to which an RFID tag  112  is coupled, (d) determination that an RFID tag  112  is being handled or moved by the individual  152  based on a time stamped pattern of MCD movement and a timestamped pattern of RFID tag  112  movement, and/or (e) determination of an association of moving RFID tags  112  and the individual  152 . 
     When a detection is made that an RFID tag  112  is being moved, the server  124  can, in some scenarios, obtain customer related information (such as a loyalty level)  142  associated with the individual. This information can be obtained from the individual&#39;s MCD  130  and/or the datastore  126 . The customer related information  142  is then used to retrieve discount information  140  for the article  110  to which the RFID tag  112  is coupled. The retrieved discount information is then communicated from the server  124  to the individual&#39;s MCD  130 . The individual&#39;s MCD  130  can output the discount information in a visual format and/or an auditory format. Other information may also be communicated from the server  124  to the individual&#39;s MCD  130 . The other information includes, but is not limited to, item level information, accessory information, and/or related product information. 
     In those or other scenarios, a sensor embedded in the RFID tag  112  detects when an individual is handling the article  110  to which the RFID tag  112  is coupled. When such a detection is made, the RFID tag  112  retrieves the object&#39;s unique identifier from its local memory, and wirelessly communicates the same to the tag reader  120 . The tag reader  120  then passes the information to the server  124 . The server  124  uses the object&#39;s unique identifier and the item/accessory relationship information (e.g., table)  136  to determine if there are any accessories associated therewith. If no accessories exist for the article  110 , the server  124  uses the item level information  134  to determine one or more characteristics of the article  110 . For example, the article  110  includes a product of a specific brand. The server  124  then uses the item/related product information (e.g., table)  138  to identify: other products of the same type with the same characteristics; and/or other products that are typically used in conjunction with the object. Related product information for the identified related products is then retrieved and provided to the MCD  130 . The MCD  130  can output the related product information in a visual format and/or an auditory format. The individual  152  can perform user-software interactions with the MCD  130  to obtain further information obtain the related product of interest. The present solution is not limited to the particulars of this scenario. 
     Retail store facility  128  can also include sensors  150 , such as video sensors, audio sensors, thermal sensors, infrared sensors, people counters, and radar sensors. 
     Referring now to  FIG. 2 , there is an illustration of an illustrative architecture for a tag  200 . RFID tags  112   1 - 112   N ,  118   1 - 118   X  are the same as or similar to tag  200 . As such, the discussion of tag  200  is sufficient for understanding the RFID tags  112   1 - 112   N ,  118   1 - 118   X  of  FIG. 1 . Tag  200  is generally configured to perform operations to (a) minimize power usage so as to extend a power source&#39;s life (e.g., a battery or a capacitor), (b) minimize collisions with other tags so that the tag of interest can be seen at given times, (c) optimize useful information within an inventory system (e.g., communicate useful change information to a tag reader), and/or (d) optimize local feature functions. 
     The tag  200  can include more or less components than that shown in  FIG. 2 . However, the components shown are sufficient to disclose an illustrative aspect implementing the present solution. Some or all of the components of the tag  200  can be implemented in hardware, software and/or a combination of hardware and software. The hardware includes, but is not limited to, one or more electronic circuits. The electronic circuit(s) may comprise passive components (e.g., capacitors and resistors) and active components (e.g., processors) arranged and/or programmed to implement the methods disclosed herein. 
     The hardware architecture of  FIG. 2  represents a representative tag  200  configured to facilitate improved inventory management/surveillance and customer experience. In this regard, the tag  200  is configured for allowing data to be exchanged with an external device (e.g., a tag reader  120  of  FIG. 1 , a beacon  146  of  FIG. 1 , an MCD  130  of  FIG. 1 , and/or a server  124  of  FIG. 1 ) via wireless communication technology. The wireless communication technology can include, but is not limited to, a Radio Frequency Identification (“RFID”) technology, a Near Field Communication (“NFC”) technology, and/or a Short Range Communication (“SRC”) technology. For example, one or more of the following wireless communication technologies are employed: Radio Frequency (“RF”) communication technology; Bluetooth technology (including Bluetooth Low Energy (“BLE”)); Wireless Fidelity (“WiFi”) technology; beacon technology; and/or Light Fidelity (“LiFi”) technology. Each of the listed wireless communication technologies is well known in the art, and therefore will not be described in detail herein. Any known or to be known wireless communication technology or other wireless communication technology can be used herein without limitation. 
     The components  206 - 214  shown in  FIG. 2  may be collectively referred to herein as a communication enabled device  204 , and may include a memory  208  and a clock/timer  214 . Memory  208  may be a volatile memory and/or a non-volatile memory. For example, the memory  208  can include, but is not limited to, Random Access Memory (“RAM”), Dynamic RAM (“DRAM”), Static RAM (“SRAM”), Read Only Memory (“ROM”), and flash memory. The memory  208  may also comprise unsecure memory and/or secure memory. 
     In some scenarios, the communication enabled device  204  comprises a Software Defined Radio (“SDR”, not shown). SDRs are well known in the art, and therefore will not be described in detail herein. However, it should be noted that the SDR can be programmatically assigned any communication protocol that is chosen by a user (e.g., RFID, WiFi, LiFi, Bluetooth, BLE, Nest, ZWave, Zigbee, etc.). The communication protocols are part of the device&#39;s firmware and reside in memory  208 . Notably, the communication protocols can be downloaded to the device at any given time. The initial/default role (being an RFID, WiFi, LiFi, etc. tag) can be assigned at the deployment thereof. If the user desires to use another protocol later, the user can remotely change the communication protocol of the deployed tag  200 . The update of the firmware, in case of issues, can also be performed remotely. 
     As shown in  FIG. 2 , the communication enabled device  204  comprises at least one antenna  202 ,  216  for allowing data to be exchanged with the external device via a wireless communication technology (e.g., an RFID technology, an NFC technology, a SRC technology, and/or a beacon technology). The antenna  202 ,  216  is configured to receive signals from the external device and/or transmit signals generated by the communication enabled device  204 . The antenna  202 ,  216  can comprise a near-field or far-field antenna. The antenna  202 ,  216  include, but are not limited to, a chip antenna or a loop antenna. 
     The communication enabled device  204  also comprises a communication device (e.g., a transceiver or transmitter)  206 . Communication devices (e.g., transceivers or transmitters) are well known in the art, and therefore will not be described herein. However, it should be understood that the communication device  206  generates and transmits signals (e.g., RF carrier signals) to external devices, as well as receives signals (e.g., RF signals) transmitted from external devices. In this way, the communication enabled device  204  facilitates the registration, identification, and location and/or tracking of an item (e.g., article  110  or  112  of  FIG. 1 ) to which the tag  200  is coupled. 
     The communication enabled device  204  is configured so that it: communicates (transmits and receives) in accordance with a time slot communication scheme; and selectively enables/disables/bypasses the communication device (e.g., transceiver) or at least one communications operation based on output of a motion sensor  250 . In some scenarios, the communication enabled device  204  selects: one or more time slots from a plurality of time slots based on the tag&#39;s unique identifier  224  (e.g., an Electronic Product Code (“EPC”)); and/or determines a Window Of Time (“WOT”) during which the communication device (e.g., transceiver)  206  is to be turned on or at least one communications operation is be enabled subsequent to when motion is detected by the motion sensor  250 . The WOT can be determined based on environmental conditions (e.g., humidity, temperature, time of day, relative distance to a location device (e.g., beacon or location tag), etc.) and/or system conditions (e.g., amount of traffic, interference occurrences, etc.). In this regard, the tag  200  can include additional sensors not shown in  FIG. 2 . 
     The communication enabled device  204  also facilitates the automatic and dynamic modification of item level information  226  that is being or is to be output from the tag  200  in response to certain trigger events. The trigger events can include, but are not limited to, the tag&#39;s arrival at a particular facility (e.g., RSF  128  of  FIG. 1 ), the tag&#39;s arrival in a particular country or geographic region, a date occurrence, a time occurrence, a price change, and/or the reception of user instructions. 
     Item level information  226  and a unique identifier (“ID”)  224  for the tag  200  can be stored in memory  208  of the communication enabled device  204  and/or communicated to other external devices (e.g., tag reader  120  of  FIG. 1  or tag reader  300  of  FIG. 3  described below, beacon  146  of  FIG. 1 , MCD  130  of  FIG. 1 , and/or server  124  of  FIG. 1 ) via communication device (e.g., transceiver)  206  and/or interface  240  (e.g., an Internet Protocol or cellular network interface). For example, the communication enabled device  204  can communicate information specifying a timestamp, a unique identifier for an item/article  110 , item description, item price, a currency symbol and/or location information to an external device. The external device (e.g., server  124 , server  400  described below, or MCD  130 ) can then store the information in a database (e.g., database  126  of  FIG. 1 ) and/or use the information for various purposes. 
     The communication enabled device  204  also comprises a controller  210  (e.g., a CPU) and input/output devices  212 . The controller  210  can execute instructions  222  implementing methods for facilitating inventory counts and management. In this regard, the controller  210  includes a processor (or logic circuitry that responds to instructions) and the memory  208  includes a computer-readable storage medium on which is stored one or more sets of instructions  222  (e.g., software code) configured to implement one or more of the methodologies, procedures, or functions described herein. The instructions  222  can also reside, completely or at least partially, within the controller  210  during execution thereof by the tag  200 . The memory  208  and the controller  210  also can constitute machine-readable media. The term “machine-readable media,” as used here, refers to a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) that store the one or more sets of instructions  222 . The term “machine-readable media,” as used here, also refers to any medium that is capable of storing, encoding, or carrying a set of instructions  222  for execution by the tag  200  and that cause the tag  200  to perform any one or more of the methodologies of the present disclosure. 
     The input/output devices  212  can include, but are not limited to, a display (e.g., an E Ink display, an LCD display, and/or an active matrix display), a speaker, a keypad, and/or light emitting diodes. The display may be used to present item level information in a textual format and/or graphical format. Similarly, the speaker may be used to output item level information in an auditory format. The speaker and/or light emitting diodes may be used to output alerts for drawing a person&#39;s attention to the tag  200  (e.g., when motion thereof has been detected) and/or for notifying the person of a particular pricing status (e.g., on sale status) of the item/article  110  to which the tag is coupled. 
     The clock/timer  214  is configured to determine a date, a time, and/or an expiration of a pre-defined period of time. Technique for determining these listed items are well known in the art, and therefore will not be described herein. Any known or to be known technique for determining these listed items can be used herein without limitation. 
     The tag  200  also comprises an optional location module  230 . The location module  230  is generally configured to determine the geographic location of the tag at any given time. For example, in some scenarios, the location module  230  employs Global Positioning System (“GPS”) technology and/or Internet based local time acquisition technology. The present solution is not limited to the particulars of this example. Any known or to be known technique for determining a geographic location can be used herein without limitation including relative positioning within a facility or structure. 
     The optional coupler  242  is provided to couple the tag  200  securely or removably to an item (e.g., object  110  or  112  of  FIG. 1 ). The coupler  242  includes, but is not limited to, a mechanical coupling means (e.g., a strap, clip, clamp, snap) and/or adhesive (e.g., glue or sticker). The coupler  242  is optional since the coupling can be achieved via a weld and/or chemical bond. 
     The tag  200  can also include a power source  236 , an optional EAS component  244 , and/or a passive/active/semi-passive RFID component  246 . Each of the listed components  236 ,  244 ,  246  is well known in the art, and therefore will not be described herein. Any known or to be known battery, EAS component and/or RFID component can be used herein without limitation. The power source  236  can include, but is not limited to, a rechargeable battery and/or a capacitor. 
     As shown in  FIG. 2 , the tag  200  further comprises an energy harvesting circuit  232  and a power management circuit  234  for ensuring continuous operation of the tag  200  without the need to change the rechargeable power source (e.g., a battery). In some scenarios, the energy harvesting circuit  232  is configured to harvest energy from one or more sources (e.g., heat, light, vibration, magnetic field, and/or RF energy) and to generate a relatively low amount of output power from the harvested energy. By employing multiple sources for harvesting, the device  200  can continue to charge despite the depletion of a source of energy. Energy harvesting circuits are well known in the art, and therefore will not be described herein. Any known or to be known energy harvesting circuit  232  can be used herein without limitation. 
     As noted above, the tag  200  may also include a motion sensor  250 . Motion sensors are well known in the art, and therefore will not be described herein. Any known or to be known motion sensor can be used herein without limitation. For example, the motion sensor  250  includes, but is not limited to, a vibration sensor, an accelerometer, a gyroscope, a linear motion sensor, a Passive Infrared (“PIR”) sensor, a tilt sensor, and/or a rotation sensor. 
     The motion sensor  250  is communicatively coupled to the controller  210  such that it can notify the controller  210  when tag motion is detected. The motion sensor  250  also communicates sensor data to the controller  210 . The sensor data is processed by the controller  210  to determine whether the motion is of a type for triggering enablement of the communication device (e.g., transceiver)  206  or at least one communications operation. For example, the sensor data can be compared to stored motion/gesture data  228  to determine if a match exists there-between. More specifically, a motion/gesture pattern specified by the sensor data can be compared to a plurality of motion/gesture patterns specified by the stored motion/gesture data  228 . The plurality of motion/gesture patterns can include, but are not limited to, a motion pattern for walking, a motion pattern for running, a motion pattern for vehicle transport, a motion pattern for vibration caused by equipment or machinery in proximity to the tag (e.g., an air conditioner or fan), a gesture for requesting assistance, a gesture for obtaining additional product information, and/or a gesture for product purchase. The type of movement (e.g., vibration or being carried) is then determined based on which stored motion/gesture data matches the sensor data. This feature allows the tag  200  to selectively enable the communication device (e.g., transceiver) or at least one communications operation only when the tag&#39;s location within a facility is actually being changed (e.g., and not when a fan is causing the tag to simply vibrate). 
     In some scenarios, the tag  200  can be also configured to enter a sleep state in which at least the motion sensor triggering of communication operations is disabled. This is desirable, for example, in scenarios when the tag  200  is being shipped or transported from a distributor to a customer. In those or other scenarios, the tag  200  can be further configured to enter the sleep state in response to its continuous detection of motion for a given period of time. The tag  200  transition from a sleep state in response to expiration of a defined time period, tag  200  reception of a control signal from an external device, and/or tag  200  detection of no motion for a period of time. 
     The power management circuit  234  is generally configured to control the supply of power to components of the tag  200 . In the event all of the storage and harvesting resources deplete to a point where the tag  200  is about to enter a shutdown/brownout state, the power management circuit  234  can cause an alert to be sent from the tag  200  to a remote device (e.g., tag reader  120  or server  124  of  FIG. 1 ). In response to the alert, the remote device can inform an associate (e.g., a store employee  132  of  FIG. 1 ) so that (s)he can investigate why the tag  200  is not recharging and/or holding charge. 
     The power management circuit  234  is also capable of redirecting an energy source to the tag  200  electronics based on the energy source&#39;s status. For example, if harvested energy is sufficient to run the tag  200  functions, the power management circuit  234  confirms that all of the tag  200  storage sources are fully charged such that the tag  200  electronic components can be run directly from the harvested energy. This ensures that the tag  200  has stored energy in case harvesting source(s) disappear or lesser energy is harvested for reasons such as drop in RF, light or vibration power levels. If a sudden drop in any of the energy sources is detected, the power management circuit  234  can cause an alert condition to be sent from the tag  200  to the remote device (e.g., tag reader  120  or server  124  of  FIG. 1 ). At this point, an investigation may be required as to what caused this alarm. Accordingly, the remote device can inform the associate (e.g., a store employee  132  of  FIG. 1 ) so that (s)he can investigate the issue. It may be that other merchandise are obscuring the harvesting source or the tagged article  110  is being stolen. 
     The present solution is not limited to that shown in  FIG. 2 . The tag  200  can have any architecture provided that it can perform the functions and operations described herein. For example, all of the components shown in  FIG. 2  can comprise a single device (e.g., an Integrated Circuit (“IC”)). Alternatively, some of the components can comprise a first tag element (e.g., a Commercial Off The Shelf (“COTS”) tag) while the remaining components comprise a second tag element communicatively coupled to the first tag element. The second tag element can provide auxiliary functions (e.g., motion sensing, etc.) to the first tag element. The second tag element may also control operational states of the first tag element. For example, the second tag element can selectively (a) enable and disable one or more features/operations of the first tag element (e.g., transceiver operations), (b) couple or decouple an antenna to and from the first tag element, (c) bypass at least one communications device or operation, and/or (d) cause an operational state of the first tag element to be changed (e.g., cause transitioning the first tag element between a power save mode and non-power save mode). In some scenarios, the operational state change can be achieved by changing the binary value of at least one state bit (e.g., from  0  to  1 , or vice versa) for causing certain communication control operations to be performed by the tag  200 . Additionally or alternatively, a switch can be actuated for creating a closed or open circuit. The present solution is not limited in this regard. 
     Referring now to  FIG. 3 , there is provided a detailed block diagram of an exemplary architecture for a tag reader  300 . Tag reader  120  of  FIG. 1  is the same as or similar to tag reader  300 . As such, the discussion of tag reader  300  is sufficient for understanding tag reader  120 . 
     Tag reader  300  may include more or less components than that shown in  FIG. 3 . However, the components shown are sufficient to disclose an illustrative aspect implementing the present solution. Some or all of the components of the tag reader  300  can be implemented in hardware, software and/or a combination of hardware and software. The hardware includes, but is not limited to, one or more electronic circuits. The electronic circuit may comprise passive components (e.g., capacitors and resistors) and active components (e.g., processors) arranged and/or programmed to implement the methods disclosed herein. 
     The hardware architecture of  FIG. 3  represents an illustration of a representative tag reader  300  configured to facilitate improved inventory counts and management within an RSF (e.g., RSF  128  of  FIG. 1 ). In this regard, the tag reader  300  comprises an RF enabled device  350  for allowing data to be exchanged with an external device (e.g., RFID tags  112   1 - 112   N ,  118   1 - 118   X  of  FIG. 1 ) via RF technology. The components  304 - 316  shown in  FIG. 3  may be collectively referred to herein as the RF enabled device  350 , and may include a power source  312  (e.g., a battery) or be connected to an external power source (e.g., an AC mains). 
     The RF enabled device  350  comprises one or more antennas  302  for allowing data to be exchanged with the external device via RF technology (e.g., RFID technology or other RF based technology). The external device may comprise RFID tags  112   1 - 112   N ,  118   1 - 118   X  of  FIG. 1 . In this case, the antenna  302  is configured to transmit RF carrier signals (e.g., interrogation signals) to the listed external devices, and/or transmit data response signals (e.g., authentication reply signals or an RFID response signal) generated by the RF enabled device  350 . In this regard, the RF enabled device  350  comprises an RF transceiver  308 . RF transceivers are well known in the art, and therefore will not be described herein. However, it should be understood that the RF transceiver  308  receives RF signals including information from the transmitting device, and forwards the same to a logic controller  310  for extracting the information therefrom. 
     The extracted information can be used to determine the presence, location, and/or type of movement of an RFID tag within a facility (e.g., RSF  128  of  FIG. 1 ). Accordingly, the logic controller  310  can store the extracted information in memory  304 , and execute algorithms using the extracted information. For example, the logic controller  310  can correlate tag reads with beacon reads to determine the location of the RFID tags within the facility. The logic controller  310  can also perform pattern recognition operations using sensor data received from RFID tags and comparison operations between recognized patterns and pre-stored patterns. The logic controller  310  can further select a time slot from a plurality of time slots based on a tag&#39;s unique identifier (e.g., an EPC), and communicate information specifying the selected time slot to the respective RFID tag. The logic controller  310  may additionally determine a WOT during which a given RFID tag&#39;s communication device (e.g., transceiver) or operation(s) is(are) to be turned on when motion is detected thereby, and communicate the same to the given RFID tag  200 . The WOT can be determined based on environmental conditions (e.g., temperature, time of day, etc.) and/or system conditions (e.g., amount of traffic, interference occurrences, etc.). Other operations performed by the logic controller  310  will be apparent from the following discussion. 
     Notably, memory  304  may be a volatile memory and/or a non-volatile memory. For example, the memory  304  can include, but is not limited to, a RAM, a DRAM, an SRAM, a ROM, and a flash memory. The memory  304  may also comprise unsecure memory and/or secure memory. The phrase “unsecure memory,” as used herein, refers to memory configured to store data in a plain text form. The phrase “secure memory,” as used herein, refers to memory configured to store data in an encrypted form and/or memory having or being disposed in a secure or tamper-proof enclosure. 
     Instructions  322  are stored in memory for execution by the RF enabled device  350  and that cause the RF enabled device  350  to perform any one or more of the methodologies of the present disclosure. The instructions  322  are generally operative to facilitate determinations as to whether or not RFID tags  200  are present within a facility  128 , where the RFID tags  200  are located within a facility  128 , which RFID tags  200  are in motion at any given time. Other functions of the RF enabled device  350  will become apparent as the discussion progresses. 
     Referring now to  FIG. 4 , there is provided a detailed block diagram of an exemplary architecture for a server  400 . Server  124  of  FIG. 1  is the same as or substantially similar to server  400 . As such, the following discussion of server  400  is sufficient for understanding server  124 . 
     Notably, the server  400  may include more or less components than those shown in  FIG. 4 . However, the components shown are sufficient to disclose an illustrative aspect implementing the present solution. The hardware architecture of  FIG. 4  represents one aspect of a representative server configured to facilitate inventory counts, inventory management, and improved customer experiences. 
     Some or all the components of the server  400  can be implemented as hardware, software and/or a combination of hardware and software. The hardware includes, but is not limited to, one or more electronic circuits. The electronic circuits can include, but are not limited to, passive components (e.g., resistors and capacitors) and/or active components (e.g., amplifiers and/or microprocessors). The passive and/or active components can be adapted to, arranged to, and/or programmed to perform one or more of the methodologies, procedures, or functions described herein. 
     As shown in  FIG. 4 , the server  400  comprises a user interface  402 , a CPU  406 , a system bus  410 , a memory  412  connected to and accessible by other portions of server  400  through system bus  410 , and hardware entities  414  connected to system bus  410 . The user interface can include input devices (e.g., a keypad  450 ) and output devices (e.g., speaker  452 , a display  454 , and/or light emitting diodes  456 ), which facilitate user-software interactions for controlling operations of the server  400 . 
     At least some of the hardware entities  414  perform actions involving access to and use of memory  412 , which can be a RAM, a disk driver, and/or a Compact Disc Read Only Memory (“CD-ROM”). Hardware entities  414  can include a disk drive unit  416  comprising a computer-readable storage medium  418  on which is stored one or more sets of instructions  420  (e.g., software code) configured to implement one or more of the methodologies, procedures, or functions described herein. The instructions  420  can also reside, completely or at least partially, within the memory  412  and/or within the CPU  406  during execution thereof by the server  400 . The memory  412  and the CPU  406  also can constitute machine-readable media. The term “machine-readable media,” as used here, refers to a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) that store the one or more sets of instructions  420 . The term “machine-readable media,” as used here, also refers to any medium that is capable of storing, encoding, or carrying a set of instructions  420  for execution by the server  400  and that cause the server  400  to perform any one or more of the methodologies of the present disclosure. 
     In some scenarios, the hardware entities  414  include an electronic circuit (e.g., a processor) programmed for facilitating the provision of a three-dimensional map showing locations of RFID tags  200  within a facility and/or changes to said locations in near real-time. In this regard, it should be understood that the electronic circuit can access and run a software application  422  installed on the server  400 . The software application  422  is generally operative to facilitate the determination of RFID tag  200  locations within a facility, the direction of travel of RFID tags  200  in motion, and the mapping of the RFID tag  200  locations and movements in a virtual three-dimensional space. 
     In those or other scenarios, the hardware entities  414  include an electronic circuit (e.g., a processor) programmed for facilitating item/article inventorying, merchandise sale, and/or customer satisfaction with a shopping experience. In this regard, the electronic circuit can access and run an inventorying software application  422  and an MCD display software application  422  installed on the server  400 . The software applications  422  are collectively generally operative to: obtain item level information and/or other information from MCDs and RFID tags  200 ; program item level information, accessory information, related product information and/or discount information onto RFID tags  200  and/or MCDs; convert the language, pricing and/or currency symbol of item level information, accessory information, related product information and/or discount information; facilitate registration of RFID tags  200  and MCDs with an enterprise system; and/or determine when MCD display update actions need to be taken based on RFID tag  200  information. Other functions of the software applications  422  will become apparent as the discussion progresses. Such other functions can relate to tag reader control and/or tag control. 
     Referring now to  FIG. 5 , there is an illustration of an illustrative architecture for an RFID tag  500 . RFID tags  112   1 - 112   N ,  118   1 - 118   X  and tag  200  are the same as or similar to RFID tag  500 . As such, the discussion of RFID tag  500  is sufficient for understanding the RFID tags  112   1 - 112   N ,  118   1 - 118   X  of  FIG. 1  and tag  200  of  FIG. 2 . Notably, the RFID tag  500  may include more or less components than those shown in  FIG. 5 . However, the components shown are sufficient to disclose an illustrative aspect implementing the present solution. The hardware architecture of  FIG. 5  represents one aspect of a representative tag configured to deactivate an RFID tag by deactivating a link between an RFID chip and an antenna. 
     The RFID tag  500  may comprise an RFID chip  502  configured to generate and transmit signals for tracking an item, an antenna  504  for receiving and transmitting wireless signals for the RFID chip  502 , and a deactivatable link  506  for electrically coupling or decoupling the RFID chip  502  and the antenna  504  to selectively deactivate the RFID tag  500 . In some aspects, the RFID tag  500  may comprise a circuit board (not shown) with an electrically conductive trace formed on the circuit board and configured to define the antenna  504 . The RFID chip  502  may be mounted on the circuit board of the RFID tag  500 . 
     The RFID chip  502  may be the same as or similar to the communication enabled device  204  of  FIG. 2 . As such, the discussion of RFID chip  502  is sufficient for understanding the communication enabled device  204  of  FIG. 2 . The RFID chip  502  may be configured to generate and transmit signals (e.g., RF carrier signals) to external devices via the antenna  504 . The RFID chip  502  may be further configured to receive signals (e.g., RF signals) transmitted from external devices via the antenna  504 . In this way, the RFID chip  502  may facilitate registration, identification, and location and/or tracking of an item (e.g., article  110  or  112  of  FIG. 1 ) to which the RFID tag  500  is coupled. 
     Alternatively or additionally, the RFID chip  502  may comply with applicable privacy laws, for example, General Data Protection Regulation (“GDPR”). In some aspects, the RFID chip  502  may be configured to be permanently or temporarily deactivated. For example, the RFID chip  502  may be configured to receive an instruction indicating that the RFID chip  502  enter a permanent or a temporary deactivated state (e.g., a “kill” command). Temporary deactivation of the RFID chip  502  may be reversed by further instructing the RFID chip  502  return to an active state or mode. The RFID chip  502  may require a password and/or other pre-determined value(s) in order to return to the active state or mode. In other aspects, the RFID chip  502  may be configured to modify at least one signal reception parameter or configuration (e.g., signal sensitivity) such that the RFID chip  502  may be unable to further receive signals. In such a scenario, the modified RFID chip  502  may only be able to receive signals if or when a transmitting antenna or external device is in very close proximity to, or in contact with the RFID tag  500 . In yet other aspects, the RFID chip  502  may be configured to overwrite or erase at least a portion of data stored on the RFID chip  502  (e.g., set the data values to all zeros). For example, the RFID chip  502  may remain active, however, the RFID chip  502  may return only zero values when queried by an external device. 
     The antenna  504  may be the same as or similar to antennas  202 ,  216  of  FIG. 2 . As such, the discussion of antenna  504  is sufficient for understanding the antennas  202 ,  216  of  FIG. 2 . The antenna  504  may be configured to receive signals from external devices and/or transmit signals generated by the RFID chip  502 . The antenna  504  may comprise a near-field and/or a far-field antenna. The antenna  504  may be electrically coupled to the RFID chip  502  via the deactivatable link  506 . 
     The deactivatable link  506  may be configured, in a first state, to electrically couple the RFID chip  502  and the antenna  504 . That is, the first state of the deactivatable link  506  may enable the RFID chip  502  to transmit and/or receive wireless signals via the antenna  504 . The deactivatable link  506  may be further configured, in a second state, to electrically decouple the RFID chip  502  and the antenna  504 . That is, the second state of the deactivatable link  506  may disable the RFID chip  502  from transmitting and/or receiving wireless signals via the antenna  504 . 
     In some aspects, the deactivatable link  506  may comprise a magnetically-actuatable switch (discussed in further detail below in reference to  FIGS. 6-9 ) configured to move between a first position and a second position. The first position of the magnetically-actuatable switch may correspond to the first state of the deactivatable link  506 . That is, the magnetically-actuatable switch may be configured to electrically couple the RFID chip  502  to the antenna  504  in the first position. The second position of the magnetically-actuatable switch may correspond to the second state of the deactivatable link  506 . That is, the magnetically-actuatable switch may be configured to electrically decouple the RFID chip  502  from the antenna  504  in the second position. 
     Alternatively or additionally, the deactivatable link  506  in the form of the magnetically-actuatable switch may be configured to subsequently change from the second position to the first position. That is, the magnetically-actuatable switch may move from the first position to the second position based on a first application of a first magnetic field. The magnetically-actuatable switch may then subsequently move from the second position to the first position based on a second application of a second magnetic field. Characteristics of the firstly applied magnetic field (e.g., polarity, strength, direction, and the like) may be similar or different to characteristics of the secondly applied magnetic field. For example, the first magnetic field may have a direction that is perpendicular to an axis of motion of the magnetically-actuatable switch and the second magnetic field may have a direction that is parallel to the axis of motion. 
     In other aspects, the magnetically-actuatable switch may be configured to remain in the second position permanently. That is, if and when the magnetically-actuatable switch moves from the first position to the second position, a subsequent application of a magnetic field may not cause the magnetically-actuatable switch to revert to the first position. 
     In some aspects, the deactivatable link  506  in the form of the magnetically-actuatable switch, as discussed in further detail below in reference to  FIGS. 6-7 , may comprise a magnetizable ferromagnetic element configured to move the magnetically-actuatable switch between the first position and the second position based on a magnetization state of the magnetizable ferromagnetic element. That is, the magnetically-actuatable switch may be in the first position if and when the magnetizable ferromagnetic element is in a magnetized state. Alternatively or additionally, the magnetically-actuatable switch may be in the second position if and when the magnetizable ferromagnetic element is in a demagnetized state. 
     In other aspects, and as discussed in further detail below in reference to  FIGS. 8-9 , the deactivatable link  506  in the form of the magnetically-actuatable switch may comprise a magnetic shape memory alloy (“MSMA”) element configured to move the magnetically-actuatable switch between the first position and the second position based on a magnetic field applied to the MSMA element. That is, the magnetically-actuatable switch may be in the first position if and when the MSMA element is in the first magnetized state. Alternatively or additionally, the magnetically-actuatable switch may be in the second position if and when the MSMA element is in the second magnetized or demagnetized state. 
     In yet other aspects, the deactivatable link  506  in the form of the magnetically-actuatable switch may comprise a ferrofluid element configured to move the magnetically-actuatable switch between the first position and the second position based on a magnetic field applied to the ferrofluid element. That is, the magnetically-actuatable switch may move from the first position to the second position if and when a magnetic field is applied to the ferrofluid element. Alternatively or additionally, the ferrofluid element may be configured, in a first magnetized state, to electrically couple the RFID chip  502  and the antenna  504 . For example, the ferrofluid element may establish an electrical connection between the RFID chip  502  and the antenna  504  if or when the ferrofluid element is in the first magnetized state. The ferrofluid element may be further configured, in a second magnetized or demagnetized state, to electrically decouple the RFID chip  502  and the antenna  504 . For example, the ferrofluid element may break the electrical connection between the RFID chip  502  and the antenna  504  if or when the ferrofluid element is in the second magnetized state or the demagnetized state. The deactivatable link  506  may further comprise a cantilever formed from ferromagnetic material to maintain the first and/or second magnetized states of the ferrofluid element. 
     The ferrofluid element may employ a ferrofluid or a magnetorheological fluid. These types of fluids are liquids that become strongly magnetized in the presence of a magnetic field. In this regard, the ferrofluid may comprise nanoscale ferromagnetic particles (e.g., iron particles) suspended in a carrier fluid (e.g., an oil emulsion). The magnetorheological fluid may comprise particles primarily on the micro-meter scale. Each of these fluids may have two states of matter, namely a solid state and a liquid state. The state of matter of the fluid may change from the liquid state to the solid state with the application of the magnetic field. The rigidity of the fluid in its solid state may depend on the strength of the magnetic field applied thereto. The fluid may lose viscosity if or when the application of the magnetic field application is discontinued. As such, the ferrofluid or the magnetorheological fluid may flow from the first position to the second position while the magnetic field is applied and may stiffen again if and when the magnetic field is no longer applied. Alternatively or additionally, the ferrofluid or the magnetorheological fluid may flow from the second position to the first position while the magnetic field is applied and may stiffen again if and when the magnetic field is no longer applied. 
     In some aspects, the deactivatable link  506  in the form of the magnetically-actuatable switch may comprise a Reed switch element configured to move the magnetically-actuatable switch between the first position and the second position based on a magnetic field applied to the Reed switch. That is, the magnetically-actuatable switch may be in the first position if and when the Reed switch is in a magnetized state. Alternatively or additionally, the magnetically-actuatable switch may be in the second position if and when the Reed switch is in the demagnetized state. For example, the Reed switch may comprise a control element and/or a switching element. In some aspects, the control element and/or the switching element may comprise a bias magnet (e.g., acousto-magnetic bias). 
     In other aspects, at least a portion of the deactivatable link  506  in the form of the magnetically-actuatable switch may be in the demagnetized state if or when the magnetically-actuatable switch is in the first position. Alternatively or additionally, the portion of the magnetically-actuatable switch may be in the magnetized state if or when the magnetically-actuatable switch is in the second position. 
     With further reference to  FIG. 5 , the deactivatable link  506  may comprise, in other aspects, a radio frequency-actuatable switch disposed between the antenna  504  and the RFID chip  502 . The radio frequency-actuatable switch may be configured to electrically couple the RFID chip  502  to the antenna  504  in the first state. Alternatively or additionally, the radio frequency-actuatable switch may be configured to electrically decouple the RFID chip  502  to the antenna  504  in the second state. For example, the radio frequency-actuatable switch may be configured to change from the first state to the second state when a radio frequency signal (e.g., Near Field Communication (“NFC”) signal, an RFID signal, or the like) is applied to the RFID tag  500 . That is, application of a first radio frequency signal may cause a change in a configuration of the radio frequency-actuatable switch. In some aspects, the radio frequency-actuatable switch may be configured to return to the first state, from the second state, by a subsequent application of a second radio frequency signal. The second radio frequency signal may be similar to or different from the first radio frequency signal. 
     Referring now to  FIGS. 6-10 , the diagrams illustrate several examples of deactivatable links (e.g., deactivatable link  506 ) that may be used for activating and/or deactivating a link between an RFID chip (e.g., RFID chip  502 ) and an antenna (e.g., antenna  504 ) of an RFID tag (e.g., RFID tag  500 ) as described above in reference to  FIG. 5 . 
       FIG. 6  provides an illustration of a first example of a deactivatable link. The deactivatable link  600  depicted in  FIG. 6  is similar in many respects to the deactivatable link  506  described above with reference to  FIG. 5 , and may include additional features not mentioned above. As such, the discussion of the deactivatable link  506  is sufficient for understanding the functionality of the deactivatable link  600  of  FIG. 6 . 
     The deactivatable link  600 , as shown in  FIG. 6 , may comprise a magnetically-actuatable switch (e.g., elements  610 - 626 ) disposed between a first antenna portion  504 A and a second antenna portion  504 B of an antenna (e.g., antenna  504  of  FIG. 5 ). The deactivatable link  600  in the form of the magnetically-actuatable switch may be configured to move between a first position and a second position based on a magnetization state of the magnetically-actuatable switch. In particular, the magnetically-actuatable switch may comprise a first cantilever member  610  formed from a magnetically soft ferromagnetic material (e.g., permalloy, mu-metal, amorphous metal, and the like) and a second cantilever member  620  formed from at least a magnetically semi-hard ferromagnetic material (e.g., CROVAC, SEMIVAC, and the like). In some aspects, the first cantilever member  610  may be formed from the magnetically semi-hard ferromagnetic material and the second cantilever member  620  may be formed from the magnetically soft ferromagnetic material. In other aspects, the first cantilever member  610  and the second cantilever member  620  may be formed from the magnetically semi-hard ferromagnetic material. A magnetic hardness of the magnetically semi-hard ferromagnetic material (i.e., the larger a magnetic field is needed to magnetize/demagnetize the material, the larger the magnetic hardness of said material) may be determined at least according to a level of a magnetic field applied by a deactivation device so as to achieve ease of deactivation while maintaining security and preventing unauthorized deactivations. 
     The first cantilever member  610  may have a first end  612  connected and/or electrically coupled to the first antenna trace portion  504 A via electrical connection  616 . The first cantilever member  610  may have an opposing second end  614 . The second cantilever member  620  may have a third end  622  connected and/or electrically coupled to the second antenna trace portion  504 B via electrical connection  626 . The second cantilever member  620  may have an opposing fourth end  624 . The second end  614  may have a first polarity (e.g., north pole) and the fourth end  624  may have an opposite polarity (e.g., south pole), as shown in  FIG. 6 . 
     The fourth end  624  may be movably connectable to the second end  614  in a magnetized state of the second cantilever member  620  to define the first position. For example, the fourth end  624  may move along path  630 , at least caused by a magnetic attraction between the first polarity of the second end  614  (e.g., north pole) and the opposite polarity of the fourth end  614  (e.g., south pole), to establish a connection (e.g., electrical connection) between the first antenna trace portion  504 A and the second antenna trace portion  504 B. That is, the magnetically-actuatable switch may be in a closed position if and when the second cantilever member  620  is magnetized. For example, the first position of the deactivatable link  600  may enable the RFID chip  502  to transmit and/or receive wireless signals via the antenna  504 . 
     The fourth end  624  may be movably spaced apart from the second end  614  in a demagnetized state of the second cantilever member  620  to define the second position. For example, the fourth end  624  may move along path  630 , in the absence of the magnetic attraction between the second end  614  and the fourth end  624 , to break the connection between the first antenna trace portion  504 A and the second antenna trace portion  504 B. That is, the magnetically-actuatable switch may be in an open position if and when the second cantilever member  620  is demagnetized. For example, the second position of the deactivatable link  600  may disable the RFID chip  502  from transmitting and/or receiving wireless signals via the antenna  504 . 
     In some aspects, the first cantilever member  610  and the second cantilever member  620  may be formed from the first antenna trace portion  504 A and the second antenna trace portion  504 B, respectively. For example, the first antenna trace portion  504 A and the second antenna trace portion  504 B may comprise magnetically soft ferromagnetic material and/or magnetically semi-hard ferromagnetic material. That is, the first antenna trace portion  504 A and the second antenna trace portion  504 B may be made magnetizable by deposition, coating, and/or plating of appropriate ferromagnetic material. 
     In other aspects, at least some elements of the deactivatable link  600  in the form of the magnetically-actuatable switch may be fixed on a substrate (not shown). For example, the first cantilever member  610 , the electrical connection  616 , and the electrical connection  626  may be fixed on the substrate, and the second cantilever member  620  may not be fixed on the substrate and allowed to move between the first position and the second position. In yet other aspects, the substrate may be formed on a circuit board (not shown) with an electrically conductive trace formed on the circuit board and configured to define the antenna  504 . An RFID chip (e.g., RFID chip  502  of  FIG. 5 ) may be mounted on the circuit board. Alternatively or additionally, the elements of deactivatable link  600  may be miniaturized using micro-electromechanical systems (“MEMS”) techniques. 
       FIG. 7  illustrates a second exemplary deactivatable link that is similar in many respects to the deactivatable links  506  and  600  described above with reference to  FIGS. 5 and 6 , respectively, and may include additional features not mentioned above. As such, the discussions of the deactivatable links  506  and  600  are sufficient for understanding the functionality of the deactivatable link  700  of  FIG. 7 . 
     The deactivatable link  700 , as shown in  FIG. 7 , may comprise a magnetically-actuatable switch (e.g., elements  710 - 740 ) disposed between a first antenna portion  504 A and a second antenna portion  504 B of an antenna (e.g., antenna  504  of  FIG. 5 ). The deactivatable link  700  in the form of the magnetically-actuatable switch may be configured to move between a first position and a second position based on a magnetization state of the magnetically-actuatable switch. In particular, the magnetically-actuatable switch may comprise a first cantilever member  710 , a second cantilever member  720 , and a magnetic ribbon member  740 . In some aspects, the first cantilever member  710  and the second cantilever member  720  may be formed from a magnetically soft ferromagnetic material (e.g., permalloy, mu-metal, amorphous metal, and the like) and the magnetic ribbon member  740  may be formed from at least a magnetically semi-hard ferromagnetic material (e.g., CROVAC, SEMIVAC, and the like). 
     The first cantilever member  710  may have a first end  712  connected and/or electrically coupled to the first antenna trace portion  504 A via electrical connection  716 . The first cantilever member  702  may have an opposing second end  714 . The second cantilever member  720  may have a third end  722  connected and/or electrically coupled to the second antenna trace portion  504 B via electrical connection  726 . The second cantilever member  720  may have an opposing fourth end  724 . The second end  714  may have a first polarity (e.g., north pole) and the fourth end  724  may have an opposite polarity (e.g., south pole), as shown in  FIG. 7 . 
     The fourth end  724  may be movably connectable to the second end  714  in a magnetized state of the magnetic ribbon member  740  to define the first position. For example, the fourth end  724  may move along path  730 , at least caused by a magnetic attraction between the first polarity of the second end  714  (e.g., north pole) and the opposite polarity of the fourth end  714  (e.g., south pole), to establish a connection (e.g., electrical connection) between the first antenna trace portion  504 A and the second antenna trace portion  504 B. That is, the magnetically-actuatable switch may be in a closed position if and when the magnetic ribbon member  740  is magnetized. For example, the first position of the deactivatable link  700  may enable the RFID chip  502  to transmit and/or receive wireless signals via the antenna  504 . 
     The fourth end  724  may be movably spaced apart from the second end  714  in a demagnetized state of the magnetic ribbon member  740  to define the second position. For example, the fourth end  724  may move along path  730 , in the absence of the magnetic attraction between the second end  714  and the fourth end  724 , to break the connection between the first antenna trace portion  504 A and the second antenna trace portion  504 B. That is, the magnetically-actuatable switch may be in an open position if and when the magnetic ribbon member  740  is demagnetized. For example, the second position of the deactivatable link  700  may disable the RFID chip  502  from transmitting and/or receiving wireless signals via the antenna  504 . 
     In some aspects, at least some elements of the deactivatable link  700  in the form of the magnetically-actuatable switch may be fixed on a substrate (not shown). For example, the first cantilever member  710 , the electrical connection  716 , the electrical connection  726 , and the magnetic ribbon member  740  may be fixed on the substrate, and the second cantilever member  720  may not be fixed on the substrate and allowed to move between the first position and the second position. In other aspects, the substrate may be formed on a circuit board (not shown) with an electrically conductive trace formed on the circuit board and configured to define the antenna  504 . An RFID chip (e.g., RFID chip  502  of  FIG. 5 ) may be mounted on the circuit board. Alternatively or additionally, the elements of deactivatable link  700  may be miniaturized using micro-electromechanical systems (“MEMS”) techniques. 
       FIG. 8  illustrates a third exemplary deactivatable link that is similar in many respects to the deactivatable links  506 ,  600 , and  700  described above with reference to  FIGS. 5-7 , respectively, and may include additional features not mentioned above. As such, the discussions of the deactivatable links  506 ,  600 , and  700  are sufficient for understanding the functionality of the deactivatable link  800  of  FIG. 8 . 
     The deactivatable link  800 , as shown in  FIG. 8 , may comprise a magnetically-actuatable switch (e.g., elements  802 - 810 ) disposed between a first antenna portion  504 A and a second antenna portion  504 B of an antenna (e.g., antenna  504  of  FIG. 5 ). The deactivatable link  800  in the form of the magnetically-actuatable switch may be configured to move between a first position and a second position based on a magnetization state of the magnetically-actuatable switch. In particular, the magnetically-actuatable switch may comprise a cantilever member  802  that may be formed from a MSMA. That is, the cantilever member  802  may be formed from a nickel-manganese-gallium alloy (NiMnGa), a MSMA composite, a MSMA multi-layer ribbon, strip, or wire, or the like. In some aspects, a cantilever form factor and/or a lamination distribution of the MSMA may be determined based at least on a deformation characteristic of a resulting cantilever member  802 . 
     The cantilever member  802  may have a first end  804  connected and/or electrically coupled to the first antenna trace portion  504 A via electrical connection  808 . The cantilever member  802  may have an opposing second end  806 . The second end  806  may be movably connectable to the second antenna trace portion  504 B via electrical connection  810  in a magnetized state of the cantilever member  802  to define the first position. For example, the cantilever member  802  may exhibit deformation (e.g., strain deformation) if and when the cantilever member  802  is subjected to a magnetic field and/or the cantilever member  802  is in the magnetized state. The deformation of the cantilever member  802  may move the second end  806  of the cantilever member  802  to the first position. For example, the second end  806  may move along path  812 , at least caused by the deformation of the cantilever member  802 , to establish a connection (e.g., electrical connection) between the first antenna trace portion  504 A and the second antenna trace portion  504 B. In some aspects, the cantilever member  802  may be moved to the first position upon application of a magnetic field in a particular direction. For example, the cantilever member  802  may be moved to the first position by applying a magnetic field in a direction that is parallel to the axis of motion. The first position of the deactivatable link  800  may enable the RFID chip  502  to transmit and/or receive wireless signals via the antenna  504 . That is, the magnetically-actuatable switch may be in a closed position if and when the cantilever member  802  is magnetized. 
     The second end  806  of the cantilever member  802  may be movably spaced apart from the second antenna trace portion  504 B in a second magnetized or demagnetized state of the cantilever member  802  to define the second position. For example, the second end  806  may move along path  812  to break the connection between the first antenna trace portion  504 A and the second antenna trace portion  504 B. In some aspects, the deformation of the cantilever member  802  may be reversed if and when the cantilever member  802  is demagnetized and/or the cantilever member  802  is subjected to another magnetic field. In other aspects, the cantilever member  802  may be moved to the second position upon application of a magnetic field in a different direction. For example, the cantilever member  802  may be moved to the second position by applying a magnetic field in a direction that is perpendicular to the axis of motion. The second position of the deactivatable link  800  may disable the RFID chip  502  from transmitting and/or receiving wireless signals via the antenna  504 . That is, the magnetically-actuatable switch may be in an open position if and when the cantilever member  802  is demagnetized. 
     The cantilever member  802  may remain in its current position if and when the magnetic field is no longer applied. Alternatively or additionally, the deformation of the cantilever member  802  may be reversible or may be permanent. That is, the position of the cantilever member  802  may be or may not be subsequently changed by a subsequent application of another magnetic field. 
       FIG. 9  illustrates a fourth exemplary deactivatable link that is similar in many respects to the deactivatable links  506 ,  600 ,  700 , and  800  described above with reference to  FIGS. 5-8 , respectively, and may include additional features not mentioned above. As such, the discussions of the deactivatable links  506 ,  600 ,  700 , and  800  are sufficient for understanding the functionality of the deactivatable link  900  of  FIG. 9 . 
     The deactivatable link  900 , as shown in  FIG. 9 , may comprise a magnetically-actuatable switch (e.g., elements  902 - 910 ) disposed between a first antenna portion  504 A and a second antenna portion  504 B of an antenna (e.g., antenna  504  of  FIG. 5 ). The deactivatable link  900  in the form of the magnetically-actuatable switch may be configured to move between a first position and a second position based on a magnetization state of the magnetically-actuatable switch. In particular, the magnetically-actuatable switch may comprise a cantilever member  902  that may be formed from a MSMA. That is, the cantilever member  902  may be formed from a nickel-manganese-gallium alloy (NiMnGa), a MSMA composite, a MSMA multi-layer ribbon, strip, or wire, or the like. 
     The cantilever member  902  may have a first end  904  connected and/or electrically coupled to the first antenna trace portion  504 A via electrical connection  908 . The cantilever member  902  may have an opposing second end  906 . The second end  906  may be movably connectable to the second antenna trace portion  504 B via electrical connection  910  in a magnetized state of the cantilever member  902  to define the first position. For example, the cantilever member  902  may exhibit elongation (e.g., elastic deformation) if and when the cantilever member  902  is subjected to a magnetic field and/or the cantilever member  902  is in the first magnetized state. The elongation of the cantilever member  902  may move the second end  906  of the cantilever member  902  to the first position. For example, the second end  906  may move along path  912 , at least caused by the deformation of the cantilever member  802 , to establish a connection (e.g., electrical connection) between the first antenna trace portion  504 A and the second antenna trace portion  504 B. In some aspects, the cantilever member  902  may be moved to the first position upon application of a magnetic field in a particular direction. For example, the cantilever member  902  may be moved to the first position by applying a magnetic field in a direction that is parallel to the axis of motion. The first position of the deactivatable link  900  may enable the RFID chip  502  to transmit and/or receive wireless signals via the antenna  504 . That is, the magnetically-actuatable switch may be in a closed position if and when the cantilever member  902  is magnetized. 
     The cantilever member  902  may retract in a second or demagnetized state of the cantilever member  902  to disconnect the second end  906  from the second antenna trace portion  504 B to define the second position. For example, the second end  906  may move along path  912  to break the connection between the first antenna trace portion  504 A and the second antenna trace portion  504 B. In some aspects, the cantilever member  902  may be retract if and when the cantilever member  902  is demagnetized and/or the cantilever member  902  is subjected to another magnetic field. That is, the cantilever member  902  may exhibit contraction if and when demagnetized and/or subjected to another magnetic field. In some aspects, the cantilever member  902  may be moved to the second position upon application of a magnetic field in a different direction. For example, the cantilever member  902  may be moved to the second position by applying a magnetic field in a direction that is perpendicular to the axis of motion. The second position of the deactivatable link  900  may disable the RFID chip  502  from transmitting and/or receiving wireless signals via the antenna  504 . That is, the magnetically-actuatable switch may be in an open position if and when the cantilever member  902  is the second magnetized state or the demagnetized state. 
     The cantilever member  902  may remain in its current position if and when the magnetic field is no longer applied. Alternatively or additionally, the elongation of the cantilever member  902  may be reversible or may be permanent. That is, the position of the cantilever member  902  may be or may not be subsequently changed by a subsequent application of another magnetic field. In some aspects, a cantilever form factor may be determined based at least on an elongation characteristic of a resulting cantilever member  802 . 
     Referring to  FIG. 10 , the diagram illustrates another example architecture for an RFID tag  1000 . RFID tags  112   1 - 112   N ,  118   1 - 118   X , tag  200 , and RFID tag  500  are the same as or similar to RFID tag  1000 . As such, the discussion of RFID tag  1000  is sufficient for understanding the RFID tags  112   1 - 112   N ,  118   1 - 118   X  of  FIG. 1 , the tag  200  of  FIG. 2 , and the RFID tag  500  of  FIG. 5 . Notably, the RFID tag  1000  may include more or less components than those shown in  FIG. 10 . However, the components shown are sufficient to disclose an illustrative aspect implementing the present solution. The hardware architecture of  FIG. 10  represents another aspect of a representative tag configured to deactivate an RFID tag by deactivating a link between an RFID chip and an antenna. 
     The RFID tag  1000  may comprise a circuit board or a flexible substrate (e.g., polyethylene terephthalate (“PET”))  1002 , an RFID chip  502 , an antenna  504 , a magnetic or dielectric layer  1006  disposed on the circuit board  1002 , and a field modulated layer  1004  disposed on the circuit board  1002 . An electrically conductive trace formed on the circuit board  1002  may be configured to define the antenna  504 . The RFID chip  502  may be mounted on the circuit board  1002  and may be electrically coupled to the antenna  504 . The RFID chip  502  may be configured to transmit and/or receive a wireless signal via the antenna  504 . 
     The field modulated layer  1004  may have a first property and a second property. The first property may interact with the magnetic or dielectric layer  1006  and the antenna  504  to enable the RFID chip  502  to transmit and/or receive the wireless signal. The second property may interact with the magnetic or dielectric layer  1006  and the antenna  504  to disable the RFID chip  502  to transmit and/or receive the wireless signal. 
     A frequency response of the RFID tag  1000  may be affected by a change in a property of the field modulated layer  1004 . That is, the frequency response may be affected by a change in a conductivity property, a permittivity property, and/or a permeability property of the field modulated layer  1004 . For example, the field modulated layer  1004  may be configured, if and when induced by a magnetic field, to vary at least one of a conductivity property, a permittivity property, and/or a permeability property. The field modulated layer  1004  may be configured, if and when the field modulated layer  1004  has the first property, to provide a first frequency response that enables the RFID chip  502  to transmit and/or receive the wireless signal. Alternatively or additionally, the field modulated layer  1004  may be configured, if and when the field modulated layer  1004  has the second property, to provide a second frequency response that disables the RFID chip  502  from transmitting and/or receiving the wireless signal. 
     The magnet or dielectric layer  1006  may maintain a magnetic or electric field to the field modulated layer  1004 . The magnetic or electric field from the magnet or dielectric layer  1006  may induce the field modulated layer  1004  to have the first property or the second property. That is, the field modulated layer  1004  may have varying conductivity, permittivity, and/or permeability properties according at least to a magnetic and/or polarization state of the magnet or dielectric layer  1006 . 
     For example, the first property of the field modulated layer  1004  may correspond to a magnetized state of the magnet or a polarized state of the dielectric layer  1006 . That is, the field modulated layer  1004  may enable the RFID chip  502  and the antenna  504  to transmit and/or receive the wireless signal if and when the magnet or dielectric layer  1006  is in the magnetized state or the polarized state. Alternatively or additionally, the second property of the field modulated layer  1004  may correspond to a demagnetized state of the magnet or an unpolarized state of the dielectric layer  1006 . That is, the field modulated layer  1004  may disable the RFID chip  502  and the antenna  504  to transmit and/or receive the wireless signal if and when the magnet or dielectric layer  1006  is in the demagnetized state or the unpolarized state. 
     In another example, the first property of the field modulated layer  1004  may correspond to the demagnetized state of the magnet or the unpolarized state of the dielectric layer  1006 . That is, the field modulated layer  1004  may enable the RFID chip  502  and the antenna  504  to transmit and/or receive the wireless signal if and when the magnet or dielectric layer  1006  is in the demagnetized state or the unpolarized state. Alternatively or additionally, the second property of the field modulated layer  1004  may correspond to the magnetized state of the magnet or the polarized state of the dielectric layer  1006 . That is, the field modulated layer  1004  may disable the RFID chip  502  and the antenna  504  to transmit and/or receive the wireless signal if and when the magnet or dielectric layer  1006  is in the magnetized state or the polarized state. 
     In some aspects, the magnet or dielectric layer  1006  and the field modulated layer  1004  may be incorporated into a substrate (not shown) of the RFID tag  1000  using printing, deposition, mechanical placement, and/or other attachment techniques. 
     In other aspects, the field modulated layer  1004  may be disposed on only a portion of the surface of the circuit board  1002 . That is, the field modulated layer  1004  may be limited to a region of the circuit board  1002  that is most sensitive to the property change (e.g., conductivity, dielectric, permittivity, and/or permeability) of the field modulated layer  1004 . 
     Continuing to refer to  FIG. 10 , the figure illustrates just one example of the magnet or dielectric layer  1006  and the field modulated layer  1004  that may be used by an RFID tag  1000 . Those of skill in the art will appreciate that the specific architecture of the RFID tag  1000  may vary, and is secondary to the functionality that is provided, as further described herein. For example, the magnet or dielectric layer  1006  and the field modulated layer  1004  may be combined into a single layer. Alternatively or additionally, the magnet or dielectric layer  1006  may have similar functionality as the field modulated layer  1004 . In another example, the antenna  504  may comprise magnetic and/or dielectric material. That is, the antenna  504  may provide the functionality described above in relation to the magnet or dielectric layer  1006  and/or the field modulated layer  1004 . 
       FIG. 11  is a block diagram of an example apparatus  1100  apparatus with a deactivatable link. The apparatus  1100  may be an EAS tag (e.g., RFID tags  112   1 - 112   N ,  118   1 - 118   X  of  FIG. 1 , tag  200  of  FIG. 2 , RFID tag  500  of  FIG. 5 , and RFID tag  1000  of  FIG. 10 ) or an EAS tag may include the apparatus  1100 . In some aspects, the apparatus  1100  may include a communication component  1102  configured to generate and transmit signals for tracking an item, an antenna component  1106  for receiving and transmitting wireless signals for the communication component  1102 , and a deactivation component  1104  for electrically coupling or decoupling the communication component  1102  and the antenna component  1106  to selectively deactivate the apparatus  1100 , and which may be in communication with one another (for example, via one or more electrical connections). As shown, the apparatus  1100  may communicate with another apparatus  1108  (such as an EAS tag reader, or another wireless communication device) using the communication component  1102  and the antenna component  1106 . 
     In some aspects, the apparatus  1100  may be configured to perform one or more operations described herein in connection with  FIGS. 5-10 . Additionally or alternatively, the apparatus  1100  may be configured to perform one or more processes described herein, such as method  1200  of  FIG. 12 . In some aspects, the apparatus  1100  may include one or more components of the EAS tags described above in connection with  FIGS. 1-2,5, and 10 . 
     The communication component  1102  may transmit and receive communications, such as reference signals, control information, data communications, or a combination thereof, to and from the apparatus  1108  via the antenna component  1106  and the deactivation component  1104 . In some aspects, the communication component  1102  may perform signal processing on the communications (such as filtering, amplification, (de)modulation, (de)multiplexing, (de)interleaving, (de)mapping, among other examples). In other aspects, the communication component  1102  may include one or more antennas, an RFID chip, a communication enabled device, or a combination thereof, of the EAS tags described above in connection with  FIGS. 1-2,5, and 10 . 
     The deactivation component  1104  may, in a first state, enable the communication component  1102  to transmit and/or receive communications via the antenna component  1106 . The deactivation component  1104  may, in a second state, disable the communication component  1102  from transmitting and/or receiving communications via the antenna component  1106 . In some aspects, the deactivation component  1104  may electrically couple, in the first state, the communication component  1102  and the antenna component  1106 , and may electrically decouple, in the second state, the communication component  1102  and the antenna component  1106 . In other aspects, the deactivation component  1104  may have a first property that corresponds to the first state that enables the communication component  1102  to transmit and/or receive communications via the antenna component  1106 , and may have second property that corresponds to the second state that disables the communication component  1102  to transmit and/or receive communications via the antenna component  1106 . The deactivation component  1104  may include one or more of the deactivatable links, or a combination thereof, of the deactivatable links described above in connection with  FIGS. 5-10 . 
     The antenna component  1106  may receive communications from the apparatus  1108  and provide the received communications to one or more other components of the apparatus  1100 , such as the communication component  1102 . The antenna component  1106  may transmit communications from the communication component to the apparatus  1108 . In some aspects, the antenna component  1106  may include one or more antennas of the EAS tags described above in connection with  FIGS. 2 and 5 . 
     Referring to  FIG. 12 , in operation, an EAS tag may perform a method  1200  of operating an EAS tag. The method  1200  may be performed by the RFID tags  112  (which may be the entire RFID tag  112  or a component of the RFID tag  112  such as the communication device  206 , the RFID chip  502 , or the deactivation link  506 ). The method  1200  may be performed by the communication component  1102  in communication with EAS tag reader  120 . 
     In block  1202  of  FIG. 12 , the method  1200  may include performing, by a communication element of the EAS tag using an antenna of the EAS tag, communication operations with an EAS system based on a movable switch of the EAS tag being in a first position that electrically couples the communication element to the antenna. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for performing, by a communication element  206  of the RFID tag  112  using an antenna  504  of the RFID tag  112 , communication operations with an EAS system  100  based on a movable switch  506  of the RFID tag  112  being in a first position that electrically couples the communication element  206  to the antenna  504 . 
     For example, the performing in block  1202  may include the movable switch of the deactivation link  506  being in a first position, corresponding to a first state, which electrically couples the communication element  206  of the RFID tag  112  to the antenna  504 . The movable switch of the deactivation link  506  may be in the first position based at least on a portion of the deactivation link  506  being in a magnetized state. 
     Further, for example, the performing in block  1202  may be performed to facilitate registration, identification, and location and/or tracking of an item (e.g., article  110  or  112  of  FIG. 1 ) to which the RFID tag  112  is coupled. 
     In block  1204 , the method  1200  may include preventing the communication element from performing the communication operations with the EAS system by changing a position of the movable switch from the first position to a second position that electrically decouples the communication element from the antenna. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for preventing the communication element  206  from performing the communication operations with the EAS system  100  by changing a position of the movable switch  506  from the first position to a second position that electrically decouples the communication element  206  from the antenna  504 . 
     For example, the preventing in block  1204  may include the movable switch of the deactivation link  506  being in a second position, corresponding to a second state, which electrically decouples the communication element  206  of the RFID tag  112  from the antenna  504 . The movable switch of the deactivation link  506  may be in the second position based at least on a portion of the deactivation link  506  being in a demagnetized state. 
     Further, for example, the preventing in block  1204  may be performed in response to a determination that the item (e.g., article  110  or  112  of  FIG. 1 ) to which the RFID tag  112  is coupled has been authorized for removal from the premise (e.g., retail store facility). 
     In an alternative or additional aspect, the method  1200  may include subsequently changing the position of the movable switch from the second position to the first position to enable performing, by the communication element using the antenna, other communication operations with the EAS system. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for changing the position of the movable switch  506  from the second position to the first position to enable performing, by the communication element  206  using the antenna  504 , other communication operations with the EAS system  100 . Further, for example, the changing may be performed to re-activate the RFID tag  112  so as to facilitate registration, identification, and location and/or tracking of an item (e.g., article  110  or  112  of  FIG. 1 ) to which the RFID tag  112  is coupled. 
     In an alternative or additional aspect, the method  1200  may include having at least a portion of the movable switch be in a demagnetized state in the first position and in a magnetized state in the second position. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for having at least a portion of the movable switch  506  be in a demagnetized state in the first position and in a magnetized state in the second position. 
     In an alternative or additional aspect, the method  1200  may include the movable switch comprising a magnetically-actuatable switch and changing the position of the switch from the first position to the second position, in response to a magnetic field being applied to the EAS tag. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for the movable switch  506  comprising a magnetically-actuatable switch and changing the position of the switch  506  from the first position to the second position, in response to a magnetic field being applied to the RFID tag  112 . Further, for example, the changing may be performed to deactivate the RFID tag  112 , by disabling the RFID chip  502  from transmitting and/or receiving wireless signals via the antenna  504 , so as to prevent registration, identification, and location and/or tracking of an item to which the RFID tag  112  is coupled. 
     In an alternative or additional aspect, the method  1200  may include the movable switch comprising a magnetically-actuatable switch that comprises a ferrofluid. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for the movable switch  506  comprising a magnetically-actuatable switch that comprises the ferrofluid. 
     In an alternative or additional aspect, the method  1200  may include the movable switch comprising a magnetically-actuatable switch that comprises a Reed switch. The Reed switch may comprise at least one of a control element and a switching element, the control element or the switching element comprising a bias magnet (e.g., acousto-magnetic bias). For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for the movable switch  506  comprising a magnetically-actuatable switch that comprises a Reed switch that comprises at least one of a control element and a switching element, the control element or the switching element comprising a bias magnet (e.g., acousto-magnetic bias). 
     In an alternative or additional aspect, the method  1200  may include the movable switch comprising a magnetically-actuatable switch and moving a cantilever of the magnetically-actuatable switch based on a magnetization state of a magnetizable ferromagnetic element of the magnetically-actuatable switch. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for the movable switch  506  comprising a magnetically-actuatable switch and moving a cantilever (e.g.,  620 ,  720 ) of the magnetically-actuatable switch based on a magnetization state of a magnetizable ferromagnetic element (e.g.,  620 ,  740 ) of the magnetically-actuatable switch. Further, for example, the moving may be performed to selectively activate or deactivate the RFID tag  112 . 
     In an alternative or additional aspect, the method  1200  may include the movable switch comprising a magnetically-actuatable switch and moving a cantilever of the magnetically-actuatable switch based on a magnetic field applied to a MSMA element of the magnetically-actuatable switch. For example, in an aspect, the RFID tag  112 , the RFID chip  502 , and/or the deactivation link  506  may be configured to or may comprise means for the movable switch  506  comprising a magnetically-actuatable switch and moving a cantilever (e.g.,  802 ,  902 ) of the magnetically-actuatable switch based on a magnetic field applied to a MSMA element (e.g.,  802 ,  902 ) of the magnetically-actuatable switch. Further, for example, the moving may be performed to selectively activate or deactivate the RFID tag  112 . 
     It is understood that the specific order or hierarchy of blocks in the processes/flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes/flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not meant to be limited to the specific order or hierarchy presented. 
     The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an element in the singular is not intended to mean “one and only one” unless specifically so stated, but rather “one or more.” The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and/or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. 
     Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module,” “mechanism,” “element,” “device,” and the like may not be a substitute for the word “means.” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for.”