Lots of interesting info on RFID use. Lars Fosdal Tech May 9, 2018 1 Minute Lots of interesting info on RFID use. https://www.codeproject.com/Articles/1096861/DIY-electronic-RFID-Door-Lock-with-Battery-Backup https://www.codeproject.com/Articles/1096861/DIY-electronic-RFID-Door-Lock-with-Battery-Backup Share this:TweetEmailMoreShare on TumblrWhatsAppTelegramPocketLike this:Like Loading... Published by Lars Fosdal Software Developer View all posts by Lars Fosdal Published May 9, 2018