There are many ways to lock a door. You could use a keypad, an RFID card, a fingerprint or ... But none of these may be as secure as [mircemk]’s Arduino-based door lock that employs a smartphone ...

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 secure ... the Pi triggers the door lock using a signal ...

When you think of Arduino projects, your mind likely goes straight to RFID door locks, weather sensors, or automated plant watering systems ... t serve any immediate use to you at all.