We often marvel at the Apple iPhone. The smartphone changed the game, its App Store meant that your mobile phone could become useful for literally thousands of things, and as a result third party companies started building products around the handset. The latest to catch our eye is the Kevo iPhone Operated Door Lock ($250).

With the Kevo iPhone Operated Door Lock you can kiss goodbye your regular door key. Instead you walk up to your door, place your finger on the lock, and enter. How you must be asking. The ring around the lock connects to your iPhone via Bluetooth and will turn green when you unlock the door.