I cannot even count it on figures how many times I have locked the room and left the keys inside but I think I have found the solution. This Bio Knob brought in by Tychi Systems works on a unique principle.
It is capable of identifying the fingerprints of around 100 users and opens the door after verifying the fingerprint. It works on a battery and which is sufficient for 1000 openings. The battery is rechargeable via an adapter and its indicator tells you about low battery. Available in two colors it looks good and is an ideal accessory for your home.
Also see New Launches