Detect reader for 125Khz possible?

Hi, is it possible to have a detect reader for 125Khz reader, similar to NFC detect reader ?

no. it’s not how 125khz works at all the reader isn’t sending anything out besides a field to recieve the data

Ok, clear, thanks!
Too bad …

besides a field to recieve the data

Well, detecting field would be nice per se. Strong 125kHz doesn’t come out of nothing, so it will allow you to tell RFID reader from broken reader or reader for something else - currently your best bet is to test for NFC and say “RFID” if it’s not.

Or use DT test card …