For this app to work, the Wear Tracker app must be installed and configured on your device.Wear Tracker SOS performs only one function: it sends a command to the main Wear Tracker application to send an SOS message to the Rosnavi monitoring system. The SOS message differs from the usual one in that the "Event" sensor has the value "SOS Red Button". In the Rosnavi system, on this basis, you can set up a trap and generate an emergency alert, a notification from a messenger, and other actions.Launching Wear Tracker SOS is conveniently set to hardware buttons. For example, on a watch, you can assign an application launch to a double press of the power button, and on a phone, to a long press of the volume down button. If the phone does not directly support the assignment of launching arbitrary applications to buttons, third-party programs (buttom mappers) can be used.