Writing to radio frequency identification (RFID) tags usually requires close proximity between a tag and an encoding or writing device (often a handheld reader), and the tag typically needs to remain ...

Could I use an RF antenna to write information to the tag’s memory chip? I am thinking in terms of labels for packaged goods. You would need to use passive ultrahigh-frequency (UHF) RFID tags that ...

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 ...