Patent Publication Number: US-10309740-B2

Title: Device and method for locking and controlling a weapon

Description:
BACKGROUND OF THE INVENTION 
     Safe storage of firearms became a high priority issue in recent years. A study made in the year 2000 on firearm storage patterns of families having children that has at least one firearm in a possession of the parents yield that, 55% of the families reported to have one or more firearms in an unlocked place and 43% reported keeping guns without a trigger lock in an unlocked place (Mark A. Schuster et al., Firearm Storage Patterns in U.S. Homes with Children, 90 Am. J. Pub. Health 588, 590 (April 2000)). 
     Unsafe storage of unlocked firearms can lead to deadly accidents involving children, parents and other people. Even at security or military organizations, where the use of firearms is widely common and done by professionals, deadly accidents due to unsafe storage or carless use of firearms occasionally happened. 
     A solution for unsafe storage of firearms is the use of a reliable locking device for locking each of the firearms one has in his possession. The locking device should be easy to operate, should be safe and should ensure that only the person authorized to use that firearm can unlock the locking device. There are several known locking devices, most of them use various mechanical locks that lock the trigger, block the firing chamber or block a magazine from being inserted into the firearm. Some of the locking devices have systems for identifying the authorized user, for example, by using a dial or a key. However, these techniques require to have the key or to remember a code to be dialed. 
     Most users, these days, carry mobile devices, such as a mobile phone, a tablet, a laptop or the like. Such a mobile device may be used to identify the user, for example, when operating an application for automatic parking payment. Smart mobile phones are usually equipped with a localization sensor, such as Global Positioning System (GPS) antenna, that allows detecting the location of the mobile phone. 
     SUMMARY OF THE INVENTION 
     Some aspects of the invention are related to a locking device for a firearm. The locking device may include a locking cartridge adapted to be inserted into a firing chamber of the firearm, the locking cartridge may include a cartridge-like housing and a locking mechanism located in the cartridge-like housing. 
     In some embodiments, when the locking mechanism is in an unlocked state, the locking mechanism may be extractable from the firearm&#39;s firing chamber, by cocking the firearm. When the locking mechanism is in a locked state, cocking the firearm may fasten the locking mechanism in the firearm&#39;s firing chamber. The locking device may further include an actuator adapted to change the state of the locking mechanism between the locked state and the unlocked state and a controller, in active communication with the actuator, configured to operate the actuator according to a signal received from an input device. In some embodiments, the locking cartridge, the actuator and the controller are extricable from the firearm together as a single unit. 
     Some additional aspect of the invention may be related to a method of controlling a locking device for locking a firearm. The method may include receiving a first signal from an input device to lock the locking device, the locking device comprising a locking cartridge, an actuator and a controller, and operating the actuator to lock the locking device inside a firing chamber of the firearm using a locking mechanism. 
     In some embodiments, the method may further include receiving a second signal from the input device to unlock the locking device, and operating the actuator to unlock the locking device inside the firing chamber by releasing the locking mechanism. 
     In some embodiments, when the locking mechanism is in an unlocked state, the locking mechanism may be extractable from the firearm&#39;s firing chamber, by cocking the firearm and when the locking mechanism is in a locked state, cocking the firearm may fasten the locking mechanism in the firearm&#39;s firing chamber. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The subject matter regarded as the invention is particularly pointed out and distinctly claimed in the concluding portion of the specification. The invention, however, both as to organization and method of operation, together with objects, features, and advantages thereof, may best be understood by reference to the following detailed description when read with the accompanying drawings in which: 
         FIGS. 1A-1B  are illustrations of an exemplary locking device inserted in an exemplary firearm according to some embodiments of the invention; 
         FIGS. 2A-2B  are illustrations of an exemplary locking device according to some embodiments of the invention; 
         FIGS. 3A-3B  are illustrations of an exemplary locking device in a locked and an unlocked states according to some embodiments of the invention; and 
         FIG. 4  is a flowchart of a method of controlling a locking device according to some embodiments of the invention. 
     
    
    
     It will be appreciated that for simplicity and clarity of illustration, elements shown in the figures have not necessarily been drawn to scale. For example, the dimensions of some of the elements may be exaggerated relative to other elements for clarity. Further, where considered appropriate, reference numerals may be repeated among the figures to indicate corresponding or analogous elements. 
     DETAILED DESCRIPTION OF THE PRESENT INVENTION 
     In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, and components have not been described in detail so as not to obscure the present invention. 
     Although embodiments of the invention are not limited in this regard, the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more”. The terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like. 
     Unless explicitly stated, the method embodiments described herein are not constrained to a particular order or sequence. Additionally, some of the described method embodiments or elements thereof can occur or be performed at the same point in time or overlapping points in time. As known in the art, an execution of an executable code segment such as a function, task, sub-task or program may be referred to as execution of the function, program or other component. 
     Some aspects of the present invention may be related to a locking device for firearms (e.g., semi-automatic firearms) that may be operated by an owner or a user of the firearm (i.e., an authorized user) using a remote controller, for example, a mobile phone. The locking device may be operated to be locked or unlocked using an application running on the mobile phone (or on other mobile devices) of the authorized user. Each locking device may be associated with a particular mobile phone (e.g., by identifying the mobile phone number). The mobile phone may communicate with the locking device using any wireless communication, such as, Bluetooth communication, Infrared communication, Cellular communication, or the like. For example, when the user inserts the locking device into a firing chamber of the firearm, the user may run an application on his mobile phone and select to lock the locking device. Only a mobile phone associated with the particular locking device can cause the locking device to be locked and vice versa, only the mobile phone associated with the particular locking device can cause the locking device to be unlocked, thus preventing any unauthorized user from unlocking the firearm. 
     In some embodiments, the locking device may not be unlocked if the associated mobile phone is located more than a predefined distance away from the locking device. For example, if the mobile device associated with the locking device, such as a smartphone of the firearm&#39;s owner, is located more than three meters away from the locking device, the locking device may not be unlocked. The device may determine if the mobile phone is close enough (e.g., below a predetermined distance) before allowing the application to cause the locking device to be unlocked or alternatively, allowing a physical input device attached to the locking device to be used in order to unlock the locking device. In some embodiments, the locking device may alert the user if an unauthorized attempt was made to extract the locking device from the firearm. As used herein, an unauthorized attempt is an attempt to operate a locking device done by an unauthorized user. For example, an attempt to extract the locking device by a user not holding a smartphone that was associated with the locking device, or by a user that failed to be identified by the locking device using any other method. In the occasion of an unauthorized attempt for extracting the locking device from the firearm, the locking device may further be fastened in the fire arm, locking the locking device tighter. 
     In some embodiments, the locking device may be extracted (e.g., by the authorized user) only after providing an identifying code or a signal to the locking device. The code or signal may be provided by the mobile phone of the authorized user or may be provided to the locking device via an input device that is physically connected to the locking device, for example: a keypad, a button, a dial and/or a biometric scanner. When the authorized user provides the identification code (e.g., activates the application running on an associated mobile phone, dials a correct set of numbers or is identified by the biometric scanner) the locking device may be unlocked and extract from the fire arm as a single unit by using the cocking mechanism of the firearm. 
     A locking device according to some embodiments may include: a locking cartridge adapted to be inserted into a firing chamber, the locking cartridge may include a cartridge-like housing and a locking mechanism located in the cartridge-like housing. The locking mechanism may be operated to lock or unlock the locking device by an actuator controlled by a controller. Each of the actuator and the controller may be located inside the cartridge-like housing or may be located outside of the cartridge-like housing and connected to the locking mechanism via a connector passable through the firearm&#39;s cartridge extraction opening. 
     Reference is made to  FIGS. 1A-1B  that are illustrations of an isometric view and top view, respectively, of an exemplary locking device inserted in an exemplary firearm according to some embodiments of the invention. As used herein, the terms side view, top view etc. refers to a relative position of the locking device when the locking device is inserted in the fire arm and the fire arm is in a firing position (such that the barrel of the firearm is parallel to the ground, and the firearm&#39;s handle is directed towards the ground). 
     A locking device  200  may be inserted into a firearm  100  (e.g., a semi-automatic firearm) such that at least a first component of locking device  200  is inserted into a firing chamber  110  of firearm  100 . Locking device  200  may be operated using input device  300 , for example, a mobile phone. In some embodiments, a second component of locking device  200  may be located external to firing chamber  110  and connected to the first component via a connector passable through a firearm&#39;s cartridge extraction opening  120 , as illustrated in  FIGS. 2A-2B  that are illustrations of top view and side view, respectively, of an exemplary locking device according to some embodiments of the invention. Locking device  200  may be extracted from firearm  100  as single unit, for example, by using the cocking mechanism of the firearm. Locking device  200  may be extracted from firing chamber  110  via cartridge extraction opening  120 . 
     Locking device  200  may include a locking cartridge  210 , an actuator  220 A or  220 B and a controller  230 . Locking cartridge  210  may include a cartridge-like housing  212  and a locking mechanism  214  located in the cartridge-like housing  212 . Cartridge-like housing  212  may have a shape of a cartridge to be inserted into the firearm. Therefore, for each firearm caliber, a dedicated cartridge-like housing  212  may be fabricated having the appropriate external diameter. Cartridge-like housing  212  may include a metallic housing made from any suitable alloy, for example, various steels, copper alloys etc. 
     Locking mechanism  214  may include any mechanism that is configured to lock locking cartridge  210  inside firing chamber  110  of firearm  100 . Locking mechanism  214  may include any mechanism/arrangement/component that may cause locking mechanism  214  to be locked inside firing chamber  110  in the locked state and may be extractable from firing chamber  110  when the locking mechanism is in an unlocked state, for example, by cocking the firearm. Locking mechanism  214  may further include any mechanism/arrangement/component that may cause the locking mechanism to fasten in firing chamber  110  on an attempt to cock firearm  100 , when locking mechanism  214  is in the locked state. 
     For example, locking mechanism  214  may include locking teeth  215  configured to be tightened against the walls of firing chamber  110  (as illustrated in  FIG. 3B ). Locking teeth  215  may be operated by a propulsion wheel  218  via a tooth axis  216 , Propulsion wheel  218  may be operated by actuator  220 A. In the exemplary locking device illustrated in  FIG. 2A , actuator  220 A is located inside cartridge-like housing  212  for direct operation of locking mechanism  210  by rotating propulsion wheel  218 . In some other exemplary embodiments, the actuator, for example, actuator  220 B may be located external to cartridge-like housing  212  and may be connected to locking mechanism  214  by a connector  240  passable through the cartridge extraction opening  110 , such that when locking device  200  is inserted into firearm  100 , actuator  220 B may be located external to firearm firing chamber  110 , for example, alongside firearm  100 . 
     In yet another example, locking mechanism  214  may include a slotted cylinder (not illustrated) having an external diameter with approximately the caliber of firearm  100 . The slotted cylinder is connected to a cartridge-like housing (e.g., having a shape of a cartridge base). The slotted cylinder may be configured to “extend” and tighten to the firing chamber&#39;s walls, when a cone inserted inside the slotted cylinder is being pulled in an attempt to extract the locking device from the firearm (e.g., by cocking the firearm). Locking mechanism  214  may further include at least one locking tooth for locking the locking mechanism; the locking tooth may be connected to the cartridge-like base and to a cable. The cable may be connected the locking tooth to an actuator located external to firearm firing chamber  110  (e.g., actuator  220 B). The cable may be located inside a connector (e.g., connector  240 ) passable through the cartridge extraction opening  110 . 
     It should be understood by any person skilled in the art that the two locking mechanisms disclosed above are given as an example only and embodiments of the invention are not limited to these two mechanisms. Any locking mechanism configured to fasten the locking mechanism in the firearm&#39;s firing chamber, upon an attempt to extract the locking mechanism when the locking mechanism is in a locked state and be extracted from the firing chamber as a single unit when the locking mechanism is in an unlocked state, can be used with the various embodiments of the present invention. 
     Actuator  220 A and/or  220 B may be any actuator adapted to change the state of locking mechanism  214  from the locked state to the unlocked state and vice versa. Actuator  220 A and/or  220 B may include a system for converting electrical energy to mechanical movement. For example, actuator  220 A and/or  220 B may be an electric motor, a piezoelectric device, a Shape-memory alloy, or the like. Actuator  220 A or  220 B may be located inside cartridge-like housing  212  or located external to the cartridge-like housing and connected to locking mechanism  214  by connector  240  passable through cartridge extraction opening  120  such that when locking device  200  is inserted into firearm  100 , actuator (e.g.,  220 B) is located external to the firearm firing chamber, for example, alongside the firearm. 
     In some embodiments, locking cartridge  210 , actuator  220 A or  220 B and controller  230  may be extracted from the firearm together as a single unit. Connector  240  may connect components of locking device  200  inserted in firing chamber  110  with components located external to firing chamber  110 , for example, located alongside firearm  100 . Connector  240  may be passable through cartridge extraction opening  120 . Locking device  200  may be extracted from the firearm, by cocking the fire arm. In some embodiments, all the various components of locking device  200  may be located inside cartridge like hosing  212 , such that entire locking device  200  may be inserted in firing chamber  110 . 
     Controller  230  may be any processing device in active communication with actuator  220 A or  220 B and configured to operate actuator  220 A or  220 B according to a signal received from an input device (e.g., input device  300 ). Controller  230  may include a processor and a memory for storing instructions to be executed by the processor. For example, instructions for, operating actuator  220 A or  220 B to lock locking device  220  inside firing chamber  110  using locking mechanism  214  upon receiving a first signal from an input device to lock locking device  200  and operating actuator  220 A or  220 B to unlock the locking device inside the firing chamber by releasing locking mechanism  214  upon receiving a second signal from the input device to unlock locking device  200 . 
     Controller  230  may be located inside cartridge like housing. Alternatively, controller  230  may be located external to the firing chamber, for example, alongside the firearm, and connector  240  passable through the firearm&#39;s cartridge extraction opening  120  may connect locking cartridge  210  and controller  230 . Connector  240  may include communication line  242  to communicate actuator  220 A and controller  230 . Therefore, when the locking device  200  is inserted into firearm  100 , locking cartridge  210  may be located in the firearm&#39;s firing chamber and controller  230 , may be located external to the firing chamber as illustrated in  FIG. 1A . 
     Input device  300  according to some embodiments of the invention may be any device that is configured to send signals to controller  230 . Input device  300  may be a mobile device, connected to the controller via wireless communication, as illustrated in  FIG. 1A . 
     In some embodiments, controller  230  may be configured to identify the mobile device as an “authorized device” and may be configured to receive signals to operate actuator  220 A or  220 B only from an authorized mobile device. 
     Input device  300 , may be a mobile device in wireless communication with locking device  200  or may be integral to and physically connected to locking device  200 . Mobile input device  300  may be a mobile phone, a tablet, a laptop computer, a remote control, or any other mobile device configured to send signals using wireless communication. The wireless communication may include, Bluetooth communication, WiFi communication, cellular communication, GSM communication, ZigBee communication, NFC communication, RADIO communication, RFID communication, satellite communication, ANT communication, Z-WAVE communication, or any other communication protocol or frequency known in the art. 
     In some embodiments, input device  300  may be physically connected to the locking device, as illustrated in  FIG. 2B . A physically connected input device  300  may include at least one of a list consisting of: a keypad, a button, a dial, a knob, a biometric scanner, and the like. Physically connected input device  300  may include a mechanism for identifying an authorized user. For example, the user may be identified using: a biometric scanner programmed with biometric data of the authorized user, a dial programmed with a code known only to authorized users, a sequence of button presses, known only to authorize users, that has to be pressed for controller  230  to identify the authorized user, etc. Following the identification of the user, input device  300  may send signals to controller  230 , for example, signals to lock or unlock locking device  200 . 
     In some embodiments, the physically connected input device may become active in case the input mobile input device is out of order (e.g., a battery of a mobile phone is running low). In some embodiments, the physically connected input device may have higher priority than the mobile input device such that an instruction received from the physically connected input device may overrule an instruction received the mobile input device (e.g., to unlock the locking device) and vice versa. 
     In some embodiments, input device  300  may operate locking device from a distance, by sending signals to controller  230  to operate actuator  220 A or  220 B. For example, in a case of a burglary (e.g., to a home), when the authorized user (e.g., one parent, a policeman, etc.) is not present, another user (e.g., the other parent) may ask the authorized user to remotely operate and unlock the locking device. In some embodiment, an additional code or identification, know to the other user, may be required to unlock the locking device, for example, a code dialed into a dial included in locking device. This may be done in order to prevent a third user (e.g., a child) from unlocking the locking device. In some embodiments, in order to unlock locking device  200  at least two signals may have to be received from at least two input devices (e.g., a mobile phone and a biometric sensor or scanner, or two different mobile phones). 
     In some embodiments, locking device  200  may include an antenna  232 . Antenna  232  may be any radiating element that is configured to send and/or receive electromagnetic signals (e.g., in a radio-frequency (RF) range). Antenna  232  may be configured to send and/or receive signals to and/or from input device  300  (e.g., Bluetooth signals or other RF signals received from a mobile device). Additionally or alternatively antenna  232  may be configured to send and/or receive signals to and/or from other devices, for example, a localization signal (e.g., a GPS signal) from a satellite. Antenna  232  may be in communication with controller  230  such that controller  230  may be configured to send and/or receive signals to and/or from input device  300  via antenna  232 . In some embodiments, locking device  200  may include more than one antenna  232 , for example, an antenna for sending/receiving Bluetooth signals and an antenna for sending/receiving GPS signals. 
     In some embodiments, antenna  232  may be located external to cartridge-like housing  212 , such that when cartridge-like housing  212  is inserted into firing chamber  110 , antenna  232  is external to firearm  100  (as illustrated in  FIG. 2B ). In some embodiments, controller  230  may be located in cartridge-like housing  212  and antenna  232  may be located external to cartridge-like housing  212 , therefore, antenna  232  may be connected to controller  230  via connector  240  passable through cartridge extraction opening  120  and communication line  242  may communicate antenna  232  to controller  230 . In some embodiments antenna  232  may be located in cartridge-like housing  212  and controller  230  may be located either in cartridge-like housing  212  or external to cartridge-like housing  212 . 
     In some embodiments, antenna  232  may be located internal to cartridge-like housing  212  and in or in proximity to firearm  100  muzzle, such that the RF communication may be received and transmitted via the muzzle. Electromagnetic waves may propagate in the muzzle, on their way to or from antenna  232 . In some embodiments, firearm  100  metallic body may act as antenna  232 . The metallic body may serve as a receiving-transmitting device, e.g. for RF communication. 
     In some embodiments, antenna  232  may be configured to receive localization signals (e.g., GPS signals) related to a location of firearm  100  and/or locking device  200  and controller  230  may be configured to report (e.g., to a user) the location of firearm  100  and/or locking device  200  via input device  300 . For example, one or more antennas  232  may receive GPS signal indicative of the location of locking device  200  (e.g., outside of the authorized user&#39;s home) and the controller may send via the one or more antennas  232  signal to the authorized user mobile device alerting that locking device  200  and firearm  100  were taken out of the authorized user home. In some embodiments, the alerting signal may be a dynamic signal and the authorized user may follow (track) a change in the location of locking device  200 . 
     In some embodiments, locking device  200  may include a sensor  250  configured to sense a condition of locking device  200 . The condition of locking device  200  may include, relative positioning of locking device  200 , a state of the locking device (e.g., locked/unlocked state), a condition of one or more of the components included in locking device  200  (e.g., actuator  220 A or  220 B is malfunctioned) or the like. Exemplary conditions of locking device  200  may include at least one of: locking device  200  is not inserted in firearm  100 , locking device  200  is in firearm  100  in the unlocked state, locking device  200  is in firearm  100  in the locked state and an attempt was done to extract locking device  200  from firearm  100  when the locking device is in the locked state. In some embodiments, device  200  may include more than one sensor  250 . 
     Sensor  250  may include any sensing device for sensing the condition of locking device  200 . For example, sensor  250  may include Micro Electro Mechanical System (MEMS), a strain gauge, a temperature sensor, or the like. Such one or more sensors may sense if the locking device is inserted into the firing chamber. Sensor  250  may further be an acceleration sensor or any other sensor configured to sense the movement of locking device  200  in firing chamber  110 , for example, in an attempt to extract the device by a non-authorized user. 
     Sensor  250  may sense attempts to sabotage locking device  200 , for example, an attempt to burn or cause a short-circuit in controller  230  of locking device  200  may be sensed using a temperature sensor, located in proximity to the controller. In some embodiments, sensor  250  may be or may be a included in a transceiver connected to antenna  232  and may further be configured to detect changes in the communication signal received by antenna  232 . In such case, the sensor may sense an attempt to violet, interfere and/or bypass the communication between locking device  200  and input device  300  (e.g., mobile device). In some embodiments, controller  230  may be configured to identify such interference even without the presence of sensor  250  on antenna  232 . For example, controller  230  may detect an attempt of an unauthorized communication network to communicate and activate locking device  200 . 
     Sensor  250  may be in communication with controller  230 , such that controller  230  may send input device  300  a notification regarding the condition (e.g., report the condition) of locking device  200  and/or send an alert if the condition has been changed. For example, the authorized user may receive to its mobile phone an alert that: an attempt was made to extract the locking device from the firearm, an attempt was made to burn locking device  200 , an unauthorized communication network is/was trying to communicate with locking device  200 , or the like. 
     In some embodiments, controller  230  may be configured to receive a signal indicative of a distance between input device  300  (e.g., a mobile input device) and locking device  200 . The distance between the input device and the locking device may be determined using a localization signal (e.g., GPS system) or other signals such as Zigbee-Ground-Penetrating Radar (GPR) location-based services, Sound Ranging, Radio Detection and Ranging (RADAR), Sound Navigation and Ranging (SONAR), Assigned-GPS (AGPS) or the like, using antenna  232  and/or sensor  250 . After determining the distance the controller may determine if the distance is smaller than a predetermined threshold value (e.g., 10 meters), indicating that the authorized user carrying the mobile input device is close to locking device  200 . If the distance is smaller than a predetermined threshold value the controller may operate the actuator to unlock the locking. Additionally or alternatively, the controller may follow a signal received (e.g., to lock or unlock device  200 ) only if the distance is smaller than a predetermined threshold value. The signal may be sent from either the mobile input device or the physically connected input device. 
     In some embodiments, locking device  200  may be used as an emergency reporting system. A user (either authorized or not) may use physically connected input device  300  to send an emergency call, for example, by dialing an emergency code (e.g.,  911 ) or pressing a button for a period of 30 seconds, or the like. Controller  230  may recognized the code as an emergency code and may send via antenna  232  a signal to an emergency service provider (e.g., the police) and/or to the mobile input device of the authorized user. In some embodiments, such a signal may include localization information regarding the location of locking device  200  in order to assist the emergency service provider to arrive to the user sending the emergency call as quickly as possible. 
     In some embodiments, locking device  200  may further include a physical cable hole (known in the art as “laptop lock Slot”) and a key for locking a cable inserted in locking-device  200 . The cable may anchor locking device  200  and firearm  100  to a physical anchoring device (e.g., a ring attached to a wall) to prevent any unauthorized user from taking (e.g., steeling) locking device  200  (and firearm  100 ). 
     Reference is made to  FIGS. 3A-3B  that are illustrations of an exemplary locking device in a locked and unlocked states according to some embodiments of the invention. In  FIG. 3A , locking device  200  is inserted to firearm  100  such that locking cartridge  210  is inside firing chamber  110 , in an unlocked state. Any attempt to cock firearm  100  may result in extraction of locking device  200  from the fire arm, as single unit. In  FIG. 3B  locking device  200  is in a locked state such that teeth  215  of locking mechanism  214  are open against the walls of firing chamber  110 . Any attempt to cock firearm  100  may result in further fastening locking mechanism  214  in firing chamber  110 . 
     In some embodiments, locking device  200  may further include a battery (not illustrated) for supplying electric power to controller  230 , actuator  230  and/or input device  300  physically connected to the locking device (as illustrated in  FIG. 2B ). In some embodiments, locking device  200  may further include a lamp  234  (e.g., a Light Emitting Diode (LED)) for notifying the user a condition of the locking device. For example, lamp  234  may be lightened up when device  200  is locked in firing chamber  110 . In yet another example, lamp  234  may flicker when an attempt have been made to extract device  200  when the device is locked in firing chamber  110 . The battery may also power lamp  234 . 
     In some embodiments, the battery may be a long living battery (e.g., at least five years) and the application running on mobile device  300  may be configured to notify the user what is the life expectancy of the battery. For example, every time the user locks or unlocks firearm  100  using the application, a notification reading the life expectancy (e.g., 11 month) may popup. In some embodiments, when the life expectancy of the battery drops below a first predetermined threshold (e.g., below six month) the application may give an additional notification to the user, demanding that before the user operates locking device  200 , the user may have to send the application a notification that he/she is aware to the short life expectancy of the battery. In some embodiments, when the life expectancy of the battery drops below a second predetermined threshold (e.g., one month) locking device  200  may be operated only using physically connected input device  300 . In some embodiments, locking device  200  may further include two electric triggers (+ and −, not illustrated) that may power locking device  200 , at least to be operated by physically connected input device  300 , thus allowing locking device  200  to be extracted only by an authorized user even if the battery ran out of power when device  200  is locked in firearm  100 . 
     Reference is made to  FIG. 4  which is a flowchart of a method of controlling a locking device for locking a firearm. The method of  FIG. 4  may be executed by controller  230 , or may be executed by any other controller for controlling a locking device. Instructions of the method may be stored in a memory associated with the controller. Locking device  200  may be inserted into firing chamber  110  for locking firearm  100 . In step  410 , the method may comprise receiving a first signal from an input device (e.g., input device  300 ) to lock locking device  200 . Locking device  200  may include a locking cartridge  210 , an actuator  220 A or  220 B and a controller  230 . The first signal may be an electromagnetic (EM) signal received via wireless communication from a mobile input device. Additionally or alternatively the signal may be received from an input device physically connected to the locking device. In some embodiments, more than one first signal may have to be received from one or more input devices. For example, two first signals may have to be received from two mobile phones, a mobile phone and a button located in the locking device, or the like. 
     In step  420 , the method may include operating actuator  220 A or  220 B to lock locking device  200  inside firing chamber  110  of firearm  100  using a locking mechanism  214 . Actuator  220 A and/or  220 B may cause the movement of an element included in the locking mechanism (e.g., teeth  215 ), such that locking cartridge  210  may tighten against the walls of firing chamber  110 . In some embodiments when locking mechanism  214  is in a locked state, cocking firearm  100  may fasten and/or tighten the locking mechanism in the firearm&#39;s firing chamber  110 . 
     In step  430 , the method may include receiving a second signal from input device  300  to unlock locking device  200 . The second signal may be an EM signal received via wireless communication from a mobile input device. Additionally or alternatively the second signal may be received from an input device physically connected to the locking device. In some embodiments, more than one second signal may have to be received from one or more input devices. For example, two second signals may have to be received from two mobile phones, a mobile phone and a button located in the locking device, or the like. For example, if a teenager wants to unlock the locking device of a firearm in a position of his family, two signals may have to be received, one from the teenager&#39;s mobile phone and one from a parent mobile phone. 
     In step  440 , the method may include operating actuator  200  to unlock locking device  200  inside firing chamber  100  by releasing locking mechanism  214 . In some embodiments, when locking mechanism  200  is in an unlocked state, locking device  200  may be extractable from the firearm&#39;s firing chamber  110 , by cocking firearm  100 . 
     In some embodiments, the method may further include determining if the locking device is inserted into the firing chamber. Locking device  200  may include at least one sensor  250  that is capable of sensing a condition or the state of the locking device, for example, if the locking device is in the firearm, if the locking device is in the locked or unlocked state, etc. In some embodiments, the method may include sending signals indicative of the state (e.g., locked or unlocked) of the locking device to input device  300 . 
     In some embodiments, the method may include receiving from sensor  250  located in the locking device a signal indicative of a condition of the locking device. The condition may be at least one of: the locking device is not inserted in the firearm, the locking is in the fire arm in the unlocked state, the locking device is in the fire arm in the locked state and an attempt was done to extract the locking device when the locking device is in the locked state. In some embodiments, the method may further include sending to the input device (e.g., a mobile device) a notification regarding (e.g., a signal indicative of) the condition of the locking device. For example, the authorized user may receive to his mobile phone, tablet, or laptop an alert when an attempt was done to extract the locking device when the locking device is in the locked state. 
     In some embodiments, the method may include receiving localization signals related to a location of the firearm, for example, a GPS signal received by an antenna  232  in communication with controller  230 . The method may further include reporting the location of the firearm by sending a signal to the input device. For example, firearms in the possession of a security company may be track by a supervisor using localization signals received from locking devices inserted in each firearm. 
     In some embodiments, the method may include receiving a signal indicative of a distance between the input device and the locking device. The signal may be a localization signal (e.g., GPS signal) or another signal. The signals may be received from antenna  232  and/or sensor  250 . In some embodiments the method may include operating actuator  220 A or  220 B to unlock locking mechanism  214  if the distance is smaller than a predetermined threshold value, for example, smaller than 2 meters.