@rcourtney we tested it mainly on Mifare Ultralight C and Mifare DESFire EV1 but NTAG should be ok. Gonna test it later.
@jasok2 ok thanks for the FitBit feedback. Nothing to do on our side then. Concerning using the CardID only, ISLOG Logon product do support that but only on the Enterprise version. NFC Community version requires to write on the tag, I believe it should be ok for most individuals no?