Bluetooth Padlock

Ever lost padlock keys or forgotten the code to your incredibly strong padlock and can’t open your locker? Imagine a padlock which can be opened with a tap on an object which everyone now carries around and rarely forgets…
Well ladies and gentlemen the future is here. I present to you a fully functional bluetooth padlock which can be unlocked from your phone and your smartwatch!
This project was for my GCSE’s which I got an A* for however this is definitely a prototype made with a tight deadline and there are many aspects of this padlock that I would like to change. This is merely a guideline so please experiment with other parts and ways of building the padlock.
Finally if you enjoy this Instructable please do vote for me in the competition and feel free to leave a comment if you have any questions.”

Link