The Trace It Keychain is a Bluetooth module you can hang on your keys, your purse or even your dog. Compatible with a free app for your smartphone or tablet (iOS and Android). The item has five functions: 1 - Track and Find, track the location of the module 2 - Remote shutter, remote control for your camera 3 - Anti lost alarm, when the module goes out of range an alarm goes off 4 - Phone finder, press the button on the module to find your phone 5 - Lost location history, if the connection is broken a pushpin will appear on the map.