I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...

There is always a tradeoff between security and costs. Since organizations can’t afford to place an armed guard at each door 24/7, they rely on video cameras, access control systems and intrusion ...

What is a door entry system? A door entry system is also known as an access control system. Entry door systems control admission to your premises for security purposes. They are put in place to ...