Well looking at the myKey 2300 you would maybe think that it was a telephone, but the clue is that it's missing a door. The MyKey 2300 is an RFID lock that requires a RFID card and shazam your door opens on it's own. They have even thought of adding a keypad that slides open should you have lost your card.
Loose something me ? Never ! 🙂
There is even the possibility to press a battery up against the door knob, should the AA batteries it runs off die on you. I doubt I'll ever have one of these but it does seem to have been nicely thought through !