no specific program. On one side i have the M5UHFRFID with an m5 atom lite.
And on the other side i have a sparkfun Simultaneous RFID Reader with an external antenna running on an esp32-s3 with its library.

It is not possible to read the tags i write with the M5UHFRFID.
More precise. I can read the tags but not the id that i wrote with the M5UHFRFID.

Hello, I use multiple UHF-RFID modules that work just fine if i stay in the same ecosystem.

But if i write a tag with the M5 UHF-RFID module and try to read it with a different UHF device, my written ID is not showing up.

Does anybody have an idea?

Thanks in advance.