Don’t know if it’s an undocumented feature (bug) or not, but I’ve noticed before that the Halo reader doesn’t support all UID numbers.
- do you know which UID number your xEM has?
- do you have RFID cloning/writing devices to change the UID number of your xEM tag?
You might want to try different UID numbers, such as the one from my video, or for example: 01DEADBEEF
Vicarious