What could be scarier than losing your car keys? When a driver is in such a situation, panic sets in. It is good if there is a second set of keys and you can quickly go for it on public transportation. Otherwise, you will have to call car breakers, and this is a lot of trouble and loss of valuable time. In such a situation it is much better to have a Bluetooth beacon, which will help you find lost keys. When you press a button on your smartphone, the beacon will emit a signal. If you are too far away from the keys, the last location where the phone and beacon pairing worked will be displayed on the map. It works perfectly with both Android and iOS devices, there are different colors of the case.