Wiegand RFID reader issue


#1

I’m having an issue with my rfid reader. I just installed a wiegand reader to my arduino. Everything works and is authenticating except for one issue. All tags are reading with the same id number, all zeros. I can’t seem to figure out why. Anyone else run into this issue?


#2

This may be a stupid question, but by any chance are the tags programmable and have the same ID by default?