Abstract:
Technology is disclosed for preventing classification of objects, e.g., in an augmented reality system. The technology can identify a set of objects to be classified, determine whether context information for one or more objects in the identified set of objects to be classified is identified as not to be employed during classification, and during classification of two different objects, include context information for one object but not the other.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This Application is the U.S. National Stage filing under 35 U.S.C. §371 of International Application Ser. No. PCT/US12/66306,filed on Nov. 21, 2012. 
     BACKGROUND 
     The availability of third generation (3G) and fourth generation (4G) mobile telecommunications technologies, and Wi-Fi wireless access technologies make it possible to provide wireless data communications. It is generally preferable to use Wi-Fi networks for data transmission because Wi-Fi wireless access technologies are typically available at lower cost but with higher throughput than the third generation (3G) and/or fourth generation (4G) mobile telecommunications technologies. However, security for Wi-Fi wireless access technologies has drawn intense scrutiny. 
     SUMMARY 
     In an example, a method performed under control of an end device first device may include transmitting a probe request frame including a fake device identifier for the end device to an access point, receiving a probe response frame including information regarding the access point from the access point, determining whether the access point is an authenticated access point based at least in part on the information regarding the access point, and transmitting a connection request including an authentic device identifier for the end device to the access point. 
     In another example, an end device may include a transmitting unit configured to transmit a probe request frame including a fake device identifier to an access point, a receiving unit configured to receive a probe response frame including information regarding the access point from the access point, a memory configured to store an authenticated access point list including information regarding at least one authenticated access point, a determination unit configured to determine whether the access point is an authenticated access point based at least in part on the information regarding the access point or the authenticated access point list, and a connecting unit configured to connect to a wireless local area network provided by the access point. The transmitting unit is further configured to transmit a connection request including an original device identifier to the access point, and the receiving unit is further configured to receive an approval of the connection request from the access point. 
     In yet another example, a computer-readable storage medium may store thereon computer-executable instructions that, in response to execution, cause an end device to perform operations, including transmitting a probe request frame including a fake device identifier of the end device to an access point, receiving a probe response frame including information regarding the access point from the access point, determining whether the access point is an authenticated access point based at least in part regarding the information regarding the access point, and transmitting a connection request including an original device identifier of the end device to the access point. 
     The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
       The foregoing and other features of this disclosure will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings. With the understanding that these drawings depict only several embodiments in accordance with the disclosure and are, therefore, not to be considered limiting of its scope, the disclosure will be described with additional specificity and detail through use of the accompanying drawings, in which: 
         FIG. 1  schematically shows an illustrative example of a network communications environment including a mobile operating server, an access point and an end device, arranged in accordance with at least some embodiments described herein; 
         FIG. 2  schematically shows an illustrative example of an authenticated access point list, arranged in accordance with at least some embodiments described herein; 
         FIG. 3  shows an example flow diagram of a process of an end device for connecting to a wireless local area network, arranged in accordance with at least some embodiments described herein; 
         FIG. 4  shows a schematic block diagram illustrating an example architecture for an end device, arranged in accordance with at least some embodiments described herein; 
         FIG. 5  illustrates a computer program product that may be utilized to provide a scheme for connecting to a wireless local area network, arranged in accordance with at least some embodiments described herein; and 
         FIG. 6  is a block diagram illustrating an example computing device that may be utilized to provide a scheme for connecting to a wireless local area network, arranged in accordance with at least some embodiments described herein. 
     
    
    
     DETAILED DESCRIPTION 
     In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the Figures, can be arranged, substituted, combined, separated, and designed in a wide variety of different configurations, all of which are explicitly contemplated herein. 
     This disclosure is generally drawn, inter alia, to methods, apparatuses, systems, devices, and computer program products related to secured wireless network communication schemes. 
     Technologies are generally described for connecting to wireless networks while preventing leakage of location information of an end device. 
     In general, in order to connect to a wireless local area network (WLAN), an end device may search for at least one available access point around the end device. By way of example, but not limitation, the access point may be a Wi-Fi access point and the WLAN may be a Wi-Fi network. When searching, the end device may transmit a probe request frame that may include a device identifier, for the end device such as a media access control (MAC) address of the end device. In such cases, since the probe request frame that includes the device identifier is transmitted to access points around the end device, present location information of the end device may be exposed to some access points with which a user of the end device does not want to be connected and/or other devices to which the end device does not want to disclose the present location information. 
     In some embodiments, an end device may transmit a probe request frame that includes a fake device identifier for the end device to at least one access point around the end device. As a response to the probe request frame, the end device may receive a probe response frame from one or more access points. The probe response frame may include information regarding the access point. By way of example, but not limitation, the information regarding the access point may include a MAC address of the access point and/or a service set identifier (SSID) of the access point. 
     The end device may determine whether there is an authenticated access point around the end device based at least in part on the information included in the probe response frame. If there is an authenticated access point around the end device, the end device may transmit a connection request including an authentic device identifier for the end device, such as an original MAC address, to the authenticated access point. Then, the end device may connect to a wireless local area network provided by the authenticated access point without a leakage of present location information of the end device to undesirable access points. 
       FIG. 1  schematically shows an illustrative example of a network communications environment  100  including a mobile operating server, an access point, and an end device, arranged in accordance with at least some embodiments described herein. 
     As illustrated in  FIG. 1 , network communications environment  100  may include a mobile operating server  110 , an access point  120  and an end device  130 . Mobile operating server  110  may control access point  120 . In  FIG. 1 , although only one access point (i.e., access point  120 ) is located around end device  130 , so that end device  130  is located in a network area  140  provided by access point  120 , there could be two or more access points around end device  130 . 
     By way of example, access point  120  may include a Wi-Fi access point and provide a WLAN that includes a Wi-Fi network. Further, by way of example, end device  130  may include, but not exclusively, a personal communication terminal, such as PCS (Personal Communication System), GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access) and Wibro (Wireless Broadband Internet) terminals. 
     End device  130  may transmit a probe request frame, which may include a fake device identifier (for example, a fake MAC address), to access point  120  for end device  130 . By way of example, but not limitation, the fake device identifier may include one or both of one or more random numbers or one or more random characters. In some embodiments, end device  130  may generate the fake device identifier and transmit the generated fake device identifier to access point  120 . Further, in some other embodiments, mobile operating server  110  may provide end device  130  with the fake device identifier, and end device  130  may transmit the provided fake device identifier to access point  120 . 
     End device  130  may receive a probe response frame from access point  120  to which end device  130  transmitted the probe request frame. The probe response frame may include information regarding access point  120 . By way of example, but not limitation, the information regarding access point  120  may include a MAC address of access point  120  and/or an SSID of access point  120 . 
     End device  130  may determine whether access point  120 , which transmitted the probe response frame to end device  130 , is an authenticated access point based at least in part on the information regarding access point  120 . In some embodiments, end device  130  may receive an authenticated access point list including information regarding at least one authenticated access point from mobile operating server  110 . End device  130  may determine whether access point  120  is an authenticated access point based at least in part on the authenticated access point list. By way of example, end device  130  may check whether the information regarding access point  120  is included in the authenticated access point list. If the information regarding access point  120  is included in the authenticated access point list, end device  130  may recognize access point  120  as an authenticated access point. By way of example, but not limitation, the authenticated access point may include an access point controlled by mobile operating server  110  and/or an access point previously connected with end device  130 . 
       FIG. 2  schematically shows an illustrative example of an authenticated access point list  200 , arranged in accordance with at least some embodiments described herein. As illustrated in  FIG. 2 , authenticated access point list  200  may include the information regarding at least one authenticated access point. By way of example, but not limitation, the information regarding the least one authenticated access point may include a MAC address or an SSID of each authenticated access point. 
     Referring back to  FIG. 1 , end device  130  may transmit a connection request, including an authentic device identifier, to authenticated access point  120  for end device  130 . By way of example, but not limitation, the authentic device identifier may include an original MAC address of end device  130 . In some embodiments, the connection request may include an authentication request for authenticated access point  120  to authenticate end device  130 . Further, the authentication request may include a shared key between access point  120  and end device  130 . 
     End device  130  may receive an approval of the connection request from access point  120 . In some embodiments, the approval of the connection request may include an authentication response. 
     End device  130  may transmit an association request to access point  120  in response to the approval of the connection request and, in response to the association request, access point  120  may transmit an association response to end device  130 . Then, end device  130  may connect to the wireless local area network provided by access point  120 . 
       FIG. 3  shows an example flow diagram of a process  300  of an end device  130  for connecting to a wireless local area network, arranged in accordance with at least some embodiments described herein. The method in  FIG. 3  may be implemented in the network communication environment including mobile operating server  110 , access point  120  and end device  130 , as illustrated in  FIG. 1 . An example process may include one or more operations, actions, or functions as illustrated by one or more blocks  310 ,  320 ,  330 ,  340 ,  350  and/or  360 . Although illustrated as discrete blocks, various blocks may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Processing may begin at block  310 . 
     At block  310  (Transmit Probe Request Frame), end device  130  may transmit a probe request frame, which may include a fake device identifier (for example, a fake MAC address), to access point  120  for end device  130 . By way of example, but not limitation, the fake device identifier may include at least one of a random number or a random character. Processing may proceed from block  310  to block  320 . 
     At block  320  (Receive Probe Response Frame), end device  130  may receive a probe response frame from access point  120  as a response to the probe request frame. The probe response frame may include information regarding access point  120 . By way of example, but not limitation, the information regarding access point  120  may include a MAC address of access point  120  and/or an SSID of access point  120 . Processing may proceed from block  320  to block  330 . 
     At block  330  (Determine Whether Access Point is Authenticated Access Point), end device  130  may determine whether access point  120 , which transmitted the probe response frame to end device  130 , is an authenticated access point based at least in part on the information regarding access point  120  included in the probe response frame. In some embodiments, end device  130  may receive authenticated access point list  200 , as illustrated in  FIG. 2 , from mobile operating server  110 . Authenticated access point list  200  may include information regarding at least one authenticated access point. 
     At block  330 , end device  130  may check whether the information regarding access point  120 , which is included in the probe response frame, is included in authenticated access point list  200 . If the information regarding access point  120  is included in authenticated access point list  200 , end device  130  may recognize access point  120  as an authenticated access point. Processing may proceed from block  330  to block  340 . 
     At block  340  (Transmit Connection Request), end device  130  may transmit a connection request including an authentic device identifier for end device  130  to access point  120  which is recognized as the authenticated access point at block  330 . By way of example, but not limitation, the authentic device identifier may include an original MAC address of end device  130 . Processing may proceed from block  340  to block  350 . 
     At block  350  (Receive Approval of Connection Request), end device  130  may receive an approval of the connection request from access point  120 . Processing may proceed from block  350  to block  360 . 
     At block  360  (Connect to Wireless Local Area Network), end device  130  may connect to a wireless local area network provided by access point  120 . By way of example, but not limitation, the wireless local area network provided by access point  120  may include a Wi-Fi network. 
     One skilled in the art will appreciate that, for this and other processes and methods disclosed herein, the functions performed in the processes and methods may be implemented in differing order. Furthermore, the outlined steps and operations are only provided as examples, and some of the steps and operations may be optional, combined into fewer steps and operations, or expanded into additional steps and operations without detracting from the essence of the disclosed embodiments. 
       FIG. 4  shows a schematic block diagram illustrating an example architecture for an end device  130 , arranged in accordance with at least some embodiments described herein. As depicted in  FIG. 4 , end device  130  may include a fake device identifier generating unit  410 , a transmitting unit  420 , a receiving unit  430 , a determination unit  440 , a memory  450 , and a connecting unit  460 . Although illustrated as discrete components, various components may be divided into additional components, combined into fewer components, or eliminated altogether while being contemplated within the scope of the disclosed subject matter. 
     Fake device identifier generating unit  410  may generate a fake device identifier (for example, a fake MAC address) for end device  130 . By way of example, but not limitation, the fake device identifier may include a random number and/or a random character. 
     Transmitting unit  420  may transmit, to access point  120 , a probe request frame which may include the fake device identifier generated by fake device identifier generating unit  410 . 
     Receiving unit  430  may receive a probe response frame from access point  120  to which the probe request frame is transmitted. The probe response frame may include information regarding access point  120 . By way of example, but not limitation, the information regarding access point  120  may include a MAC address of access point  120  and/or an SSID of access point  120 . 
     In some embodiments, receiving unit  430  may receive a fake device identifier (for example, a fake MAC address) for end device  130  from mobile operating server  110 . In such cases, transmitting unit  420  may transmit, to access point  120 , a probe request frame that includes the fake device identifier received from mobile operating server  110 . 
     Determination unit  440  may determine whether access point  120 , which transmitted the probe response frame to end device  130 , is an authenticated access point based at least in part on the information regarding access point  120 . In some embodiments, determination unit  440  may compare the information regarding access point  120 , which is included in the probe response frame, and information regarding authenticated access points, which is included in authenticated access point list  200  as illustrated in  FIG. 2 . The information regarding the authenticated access points may include a MAC address and/or an SSID of each of the authenticated access points. 
     Determination unit  440  may determine whether the information regarding access point  120 , which is included in the probe response frame, is included in authenticated access point list  200 . If the information regarding access point  120  is included in authenticated access point list  200 , end device  130  may recognize access point  120  as an authenticated access point. 
     Memory  450  may store authenticated access point list  200 . In some embodiments, receiving unit  430  may receive authenticated access point list  200  from mobile operating server  110  and memory  450  may store the received authenticated access point list  200 . Further, memory  450  may store the fake device identifier which is generated by fake device identifier generating unit  410  or received from mobile operating server  110 . 
     Transmitting unit  420  may transmit a connection request, which includes an authentic device identifier, for end device  130  to access point  120  that is recognized as the authenticated access point by determination unit  440 . By way of example, but not limitation, the authentic device identifier may include an original MAC address of end device  130 . 
     Receiving unit  430  may receive an approval of the connection request from access point  120  and connecting unit  460  may connect to a wireless local area network provided by access point  120 . 
       FIG. 5  illustrates a computer program product  500  that may be utilized to provide a scheme for connecting to a wireless local area network, arranged in accordance with at least some embodiments described herein. Computer program product  500  may include a signal bearing medium  502 . Signal bearing medium  502  may include one or more instructions  504  that, when executed by, for example, a processor, may provide the functionality described above with respect to  FIGS. 1-4 . By way of example, instructions  504  may include: one or more instructions for transmitting a probe request frame including a fake device identifier (for example, a fake MAC address) of the end device to an access point, one or more instructions for receiving a probe response frame including information regarding the access point from the access point, one or more instructions for determining whether the access point is an authenticated access point based at least in part regarding the information regarding the access point, and one or more instructions for transmitting a connection request including an authentic device identifier of the end device to the access point. Thus, for example, referring to  FIG. 4 , end device  130  may undertake one or more of the blocks shown in  FIG. 3  in response to instructions  504 . 
     In some implementations, signal bearing medium  502  may encompass a computer-readable medium  506 , such as, but not limited to, a hard disk drive (HDD), a compact disk (CD), a digital versatile disk (DVD), a digital tape, memory, etc. In some implementations, signal bearing medium  502  may encompass a recordable medium  508 , such as, but not limited to, memory, read/write (R/W) CDs, R/W DVDs, etc. In some implementations, signal bearing medium  502  may encompass a communications medium  510 , such as, but not limited to, a digital and/or an analog communication medium (e.g., a fiber optic cable, a waveguide, a wired communication link, a wireless communication link, etc.). Thus, for example, computer program product  500  may be conveyed to one or more modules of mobile operating server  110  by an RF signal bearing medium  502 , where the signal bearing medium  502  is conveyed by a wireless communications medium  510  (e.g., a wireless communications medium conforming with the IEEE 802.11 standard). 
       FIG. 6  is a block diagram illustrating an example computing device that may be utilized to provide a scheme for connecting to a wireless local area network, arranged in accordance with at least some embodiments described herein. In these examples, elements of computing device  600  may be arranged or configured for a mobile operating server or an end device. In a very basic configuration  602 , computing device  600  typically includes one or more processors  604  and a system memory  606 . A memory bus  608  may be used for communicating between processor  604  and system memory  606 . 
     Depending on the desired configuration, processor  604  may be of any type including but not limited to a microprocessor (μP), a microcontroller C), a digital signal processor (DSP), or any combination thereof. Processor  604  may include one or more levels of caching, such as a level one cache  610  and a level two cache  612 , a processor core  614 , and registers  616 . An example processor core  614  may include an arithmetic logic unit (ALU), a floating point unit (FPU), a digital signal processing core (DSP core), or any combination thereof. An example memory controller  618  may also be used with processor  604 , or in some implementations memory controller  618  may be an internal part of processor  604 . 
     Depending on the desired configuration, system memory  606  may be of any type including but not limited to volatile memory (such as RAM), non-volatile memory (such as ROM, flash memory, etc.) or any combination thereof. System memory  606  may include an operating system  620 , one or more applications  622  (including instructions  626 ), and program data  624 . 
     Computing device  600  may have additional features or functionality, and additional interfaces to facilitate communications between basic configuration  602  and any required devices and interfaces. For example, a bus/interface controller  630  may be used to facilitate communications between basic configuration  602  and one or more data storage devices  632  via a storage interface bus  634 . Data storage devices  632  may be removable storage devices  636 , non-removable storage devices  638 , or a combination thereof. Examples of removable storage and non-removable storage devices include magnetic disk devices such as flexible disk drives and hard-disk drives (HDD), optical disk drives such as compact disk (CD) drives or digital versatile disk (DVD) drives, solid state drives (SSD), and tape drives to name a few. Example computer storage media may include volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. 
     System memory  606 , removable storage devices  636  and non-removable storage devices  638  are examples of computer storage media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which may be used to store the desired information and which may be accessed by computing device  600 . Any such computer storage media may be part of computing device  600 . 
     Computing device  600  may also include an interface bus  640  for facilitating communication from various interface devices (e.g., output devices  642 , peripheral interfaces  644 , and communication devices  646 ) to basic configuration  602  via bus/interface controller  630 . Example output devices  642  include a graphics processing unit  648  and an audio processing unit  650 , which may be configured to communicate to various external devices such as a display or speakers via one or more A/V ports  652 . Example peripheral interfaces  644  include a serial interface controller  654  or a parallel interface controller  656 , which may be configured to communicate with external devices such as input devices (e.g., keyboard, mouse, pen, voice input device, touch input device, etc.) or other peripheral devices (e.g., printer, scanner, etc.) via one or more I/O ports  658 . An example communication device  646  includes a network controller  660 , which may be arranged to facilitate communications with one or more other computing devices  662  over a network communication link via one or more communication ports  664 . 
     The network communication link may be one example of a communication media. Communication media may typically be embodied by computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media. A “modulated data signal” may be a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. By way of example, and not limitation, communication media may include wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, radio frequency (RF), microwave, infrared (IR) and other wireless media. The term computer readable media as used herein may include both storage media and communication media. 
     Computing device  600  may be implemented as a portion of a small-form factor portable (or mobile) electronic device such as a cell phone, a personal data assistant (PDA), a personal media player device, a wireless web-watch device, a personal headset device, an application specific device, or a hybrid device that include any of the above functions. Computing device  600  may also be implemented as a personal computer including both laptop computer and non-laptop computer configurations. 
     The present disclosure is not to be limited in terms of the particular embodiments described in this application, which are intended as illustrations of various aspects. Many modifications and variations can be made without departing from its spirit and scope, as will be apparent to those skilled in the art. Functionally equivalent methods and apparatuses within the scope of the disclosure, in addition to those enumerated herein, will be apparent to those skilled in the art from the foregoing descriptions. Such modifications and variations are intended to fall within the scope of the appended claims. The present disclosure is to be limited only by the terms of the appended claims, along with the full scope of equivalents to which such claims are entitled. It is to be understood that this disclosure is not limited to particular methods, reagents, compounds, compositions or biological systems, which can, of course, vary. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting. 
     With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity. 
     It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation, no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to embodiments containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general, such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general, such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.” 
     In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group. 
     As will be understood by one skilled in the art, for any and all purposes, such as in terms of providing a written description, all ranges disclosed herein also encompass any and all possible subranges and combinations of subranges thereof. Any listed range can be easily recognized as sufficiently describing and enabling the same range being broken down into at least equal halves, thirds, quarters, fifths, tenths, etc. As a non-limiting example, each range discussed herein can be readily broken down into a lower third, middle third and upper third, etc. As will also be understood by one skilled in the art all language such as “up to,” “at least,” and the like include the number recited and refer to ranges which can be subsequently broken down into subranges as discussed above. Finally, as will be understood by one skilled in the art, a range includes each individual member. Thus, for example, a group having 1-3 cells refers to groups having 1, 2, or 3 cells. Similarly, a group having 1-5 cells refers to groups having 1, 2, 3, 4, or 5 cells, and so forth. 
     From the foregoing, it will be appreciated that various embodiments of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various embodiments disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.