Can I do maintenance on my RFID key system?

Hi,

I am do maintenance for a rental property of family. We used to have 10 RFID keyfobs that interact with a cheap wall mounted RFID reader to open a door. It looks very generic to me. Now we only have 3 keys left but another 10 that are blank. Can I somehow duplicate those keys? I am good with electronics and such stuff, but I never worked with RFID.

see if you can find the manual of the RFID reader...
It possibly/probably has a function to clear/learn new keys.
which they use in the factory.

Otherwise identify the controller and do some research on datasheets, other products using the same components...

good luck.

Welcome to the world of "proprietary" products. :grinning: