I was going through my old youtube playlists recently and I stumbled upon a video that I hadn’t seen for over a year ago. I thought it was really cool and some of you may not have seen this before. It’s a knock detecting lock made by inventor Steve Hoefer. It detects a knocking sequence and unlocks a door when the knocking is produced correctly.
This is a really cool idea for a micro-controller. This is definitely thinking outside the box as far as security goes. I think using it would seem so natural. Also I think the benefit is that your knock could be complex, but somewhat easy to remember. Could you imagine somebody trying to crack it by standing there knocking a long time? I don’t, plus they would be likely to get unwanted attention.
What do you think about this innovation? Do you guys think it’s practical for use?
link for info on how to build: http://projects.grathio.com/2010/05/project-secret-knock-detecting-lock.html