Abstract: A plurality of mobile communications devices (121) are distributed within a defined environment (120), which may be a hospital, correctional facility, school, public building, or private building. The locations of the mobile communications devices (121) within the defined environment (120) are precisely determined using a network of beacons (122) having known fixed locations within the defined environment (120). The mobile communications devices (121) communicate with the fixed beacons (122) using any suitable wireless protocol, such as the Bluetooth protocol. In preferred embodiments, each beacon (122) knows its precise location within the defined environment (120) by assigning x and y coordinates to the beacon (122) on a site map of the defined embodiment (120).

Abstract: A plurality of mobile communications devices (121) are distributed within a defined environment (120), which may be a hospital, correctional facility, school, public building, or private building. The locations of the mobile communications devices (121) within the defined environment (120) are precisely determined using a network of beacons (122) having known fixed locations within the defined environment (120). The mobile communications devices (121) communicate with the fixed beacons (122) using any suitable wireless protocol, such as the Bluetooth protocol. In preferred embodiments, each beacon (122) knows its precise location within the defined environment (120) by assigning x and y coordinates to the beacon (122) on a site map of the defined embodiment (120).

Abstract: A security condition notification system (1, 1?, 1?) providing improved communication for emergency situations. The system (1, 1?, 1?) comprises a condition transmitter device (2, 2?, 2?, 2??) and a condition indicator device (5, 5?). The condition transmitter device (2, 2?, 2?, 2??) comprises a user interface (3, 3?), configured to enable a user to activate one of at least a first and a second security condition. The condition transmitter device (2, 2?, 2?, 2??) further comprises a transmitter communication interface (4, 4?) connected with said user interface (3, 3?) and configured for transmitting a security notification signal corresponding to the activated security condition to said condition indicator device (5, 5?). The condition indicator device (5, 5?) is configured to receive said security notification signal and comprises an indicator module (7,7?), configured to display the security condition of said condition transmitter device (2, 2?, 2?, 2??), activated by the user.

Abstract: A security condition notification system (1, 1?, 1?) providing improved communication, in particular for emergency situations. The system (1, 1?, 1?) comprises a condition transmitter device (2, 2?, 2?, 2??) and a condition indicator device (5, 5?). The condition transmitter device (2, 2?, 2?, 2??) comprises at least a user interface (3, 3?), configured to enable a user to activate one of at least a first and a second security condition. The condition transmitter device (2, 2?, 2?, 2??) further comprises a transmitter communication interface (4, 4?) connected with said user interface (3, 3?) and configured for transmitting a security notification signal corresponding to the activated security condition to said condition indicator device (5, 5?).