So i successfully Cloned my work access card and the doors readers work. The trouble is they only work once!? Every door reader in the damn building lol. So the readers i try, will work once then wont read it the next time. Any ideas? Is it possible the readers can detect it’s a clone UID?
If you clone again will they work again?
Also get full memory dumps of the xM1 before and after you try using a door for the first time to see if anything changes on the tag. Do the same for the original card.