When people forget to remove the card, or become complacent and leave it in the reader/keyboard.
Excuse my ignorance I'm not up on this, but why do you need 2 level authority? I use my fingerprint and a pin for my laptop, wouldn't that be enough?
Hello and welcome, if you are trade then have a read of the forum rules and apply for trade status. Over on that side of the forum there's a plethora of information.
Oh, and you can't PM yet as a new member.
Codes are saved in the main control but just as a caveat it's not totally uncommon for older panels to corrupt or lose programming when down powered.
More than likely OK but worst case you would have to update/replace the control panel
As above these have a habit of the NVM going faulty, needs to be reprogrammed from scratch, and fully testing to ensure it doesn't spaff the programming again on power loss.