Arduino enthusiasts looking for a new project to complete over the weekend might be interested in this Arduino door lock which is automatically activated as soon as you enter incognito browsing ...

Perhaps you could create an Arduino device to lean on the door right before the Arduino device bolts the door. It's not clear if the lock unlocks the door when you close that incognito browser.

Electronic and Arduino enthusiasts searching for an Arduino project to keep them busy this weekend may be interested in a new Arduino Mega fingerprint door lock. Using a little Arduino programming ...

An RFID reader and Arduino run the system, with a button inside to unlock the door. But if power were to fail, you will still be able to get in or out manually.

This proves that you have access to the secret, and can only be used once. To secure his Lego mini-figures, [Luca] built an authentication system using Google Authenticator and Arduino.