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 ...

The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time. We can use it to lock the doors and for other security purposes. This article ...

Korean company KeyWe has launched what it's calling the "smartest lock ever" on Kickstarter. And with Wi-Fi, NFC, Bluetooth, a touchpad and an old-fashioned backup key, it's certainly swinging for the ...

Here is the circuit diagram of Electronic code lock system using 8051 microcontroller. It is very useful at residential places to ensure better safety. This system demonstrates a circuit named ...