LOCATOR BEACON AND RADAR APPLICATION FOR MOBILE DEVICE

PROBLEM TO BE SOLVED: To provide a device, a system, and a method necessary for providing a radio communication constituent element configured so as to transmit and receive a radio signal.SOLUTION: The device has its location determined via radio means, and the radio communication constituent element includes a received signal strength indicator (RSSI) necessary to measure the signal strength of a radio signal received by the radio communication constituent element, wherein the device is configured so as to be tracked by a mobile computer device (MCD) running a mobile application, a distance of the device from the MCD is calculated by the mobile application after receiving a RSSI value between 1 and 3 measured by an RSSI module, and transmitted by a signal to the MCD by the device, the distance being calculated on the basis of the average of received RSSI values.