The Unknown

I put down my repair kit and I place my finger on the scanner next to the door.
UNKNOWN
I wipe it with a cloth and try again.
UNKNOWN
“Is there something wrong with the scanner?” I ask the guard standing by the door.
He shrugs. “I just work here, man.”
“Can I show you my ID?” I ask the guard.
“Yes, but it won’t do any good,” said the guard. “I don’t know who can enter. And I can’t open the door, either.”
I try again.
UNKNOWN
Then, I realized: It was the scanner I’d been called to repair.