Are you the kind of person who is always leaving keys at home or at the office and constantly find yourself stuck out of the house? Well don’t worry, because traditional keys will soon be a thing of the past. Someone managed to build an unlocking contraption for the door of his house and shared a video of it online. To unlock his door, all he has to do is send a text massage from the phone, when it gets approved (he is on the list of approved numbers) the contraption unlocks the door and lets him in. The SMS lock is definitely interesting and I think it has a good chance of being commercialized in the future but maybe using NFC instead of a text message to make things even more convenient. The only problems I can see with it would be losing your phone or running out of battery – both which would be disastrous if you didn’t have a backup way to unlock the door. Hit the break to watch a video of the lock in action: