Project Description A secure door lock system using Arduino Uno, RFID (MFRC522), and a 4x4 Matrix Keypad. Authorized users can unlock the door with either an RFID tag or a PIN code.

In it, [Joe Roberts] outlines the process of building a simple RFID-triggered mechanism for their office door. It’s a pretty simple setup that is composed of an RFID reader, a Rasperry Pi and a ...

The door stays locked at all times, and punching in the right keycode just turns the handle from the inside. It's an pretty slick way to work around dorm rules, as well as making a system that can ...

We went in search of the best keypad door locks to find models that are secure, easy-to-install, and easy to use. Here's what we found.