Abstract: An improved wearable locator has an ultra-low power RF transceiver, GPS receiver, cellular network RF transceiver, processor, programmable non-volatile memory, LCD display, accelerometer and rechargeable battery. To ensure that the locator is within a perimeter, it can cooperate with a subordinate unit that includes an ultra-low power RF transceiver, processor, power supply, DC charging output, rechargeable battery, visual, audible and tactile enunciators and pushbutton, and can be plugged into an outlet or be unplugged and be mobile. Other wireless units can be used to define a perimeter.

Abstract: An improved wearable locator has an ultra-low power RF transceiver, GPS receiver, cellular network RF transceiver, processor, programmable non-volatile memory, LCD display, accelerometer and rechargeable battery. To ensure that the locator is within a perimeter, it can cooperate with a subordinate unit that includes an ultra-low power RF transceiver, processor, power supply, DC charging output, rechargeable battery, visual, audible and tactile enunciators and pushbutton, and can be plugged into an outlet or be unplugged and be mobile. Other wireless units can be used to define a perimeter.

Abstract: A personal locator beacon system including at least one individual locator device and a plurality of battery powered wireless beacons installed at different locations within a facility. Each individual locator device is worn by a corresponding individual and has a local wireless transceiver and a GPS receiver. The plurality of beacons include at least a subset of reed switch beacons installed at different doorway locations within the facility. Each reed switch beacon is configured to transmit an identification signal with a predetermined signal strength for reception by the local wireless transceiver of the individual locator device within a designated area of the facility, as well as to selectively acquire a perimeter mode for detecting opening of a respective door of the facility.

Abstract: A personal locator beacon system including at least one individual locator device and a plurality of battery powered wireless beacons installed at different locations within a facility. Each individual locator device is worn by a corresponding individual and has a local wireless transceiver and a GPS receiver. The plurality of beacons include at least a subset of reed switch beacons installed at different doorway locations within the facility. Each reed switch beacon is configured to transmit an identification signal with a predetermined signal strength for reception by the local wireless transceiver of the individual locator device within a designated area of the facility, as well as to selectively acquire a perimeter mode for detecting opening of a respective door of the facility.

Abstract: An improved wearable locator has an ultra-low power RF transceiver, GPS receiver, cellular network RF transceiver, processor, programmable non-volatile memory, LCD display, accelerometer and rechargeable battery. To ensure that the locator is within a perimeter, it can cooperate with a subordinate unit that includes an ultra-low power RF transceiver, processor, power supply, DC charging output, rechargeable battery, visual, audible and tactile enunciators and pushbutton, and can be plugged into an outlet or be unplugged and be mobile. Other wireless units can be used to define a perimeter.

Abstract: A method for providing a security code comprises providing an access location identification and security device information. A user provides access location information and access duration information to a code generator system. The access location information and access duration information is encrypted to provide an access code. The user provides a user token data to the code generator system, such that the access code is encrypted using the user token data to provide a security code. The security code is dispatched to the user.

Abstract: A method for providing a security code comprises providing an access location identification and security device information. A user provides access location information and access duration information to a code generator system. The access location information and access duration information is encrypted to provide an access code. The user provides a user token data to the code generator system, such that the access code is encrypted using the user token data to provide a security code. The security code is dispatched to the user.

Abstract: A lock (10) suited for locking safes and vaults comprises an access control system (12) and a locking device (14). The access control system (12) is provided with an anti-tampering system (24, 41 and 70) which is adapted to provide indication of illegal separation of the parts (30 and 60) housing the access control system (12). The locking device (14) includes a bolt assembly (20) which may be configured to provide a spring-loaded bolt or, alternatively, a deadbolt. The locking device (14) further comprises a re-locking mechanism (202 and 202′) adapted to prevent retraction of the bolt (20) upon displacement of the cover (108) of the lock casing (106).