This system was designed for a garage door. The bistable relay serves to disable the communication between the sensor and the Arduino in case there are more than 3 false scanner fingerprints, or ...

Group entry hacks are a favorite for hacker social groups. Why use old fashioned keys when you can use newfangled electronic keys? If you are looking to build a simple RFID-based security system to… ...

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.

A smart lock can be a convenient way to monitor access to your home. But what happens when your phone dies or there's a power outage?