We sell Bluetooth tracking devices online. Devices are Tile, Trackr, Duet. - You can attach this small bluetooth tracker device to you item(keys/bag/purse/pets/items). - In case the item is lost within the house, you can find it using an app on the iphone. - In case the item is stolen, you can mark your item "Stolen" on the app on the iphone and this enables anyone in the world with the app on there iphone to help you search for your lost item anonymously and securely.