If you are looking to build a simple ... door, the reader grabs the code and the Pi compares it with a list of authorized users. If the card is on the list, the Pi triggers the door lock using ...

He calls the project “simple and cheap ... so [Giorgos] disassembled his door’s locking mechanism to see how he might be able to actuate the lock electronically himself.

The Yale YRD256 Assure Lock SL has an excellent interface that makes it simple to use ... and a feature that automatically locks the door behind you. It can hold up to 25 unique codes and has ...