You're the new doorman at the apartment. You sat down on the chair while waiting for the apartment's residents or guest to arrived. In the room, you have the residents folder on your right to check if the person requested to enter the apartment was the real human not the doppelgangers. On the left wall, there's a today's list, D.D.D's number 3312, and an emergency button. There's a checklist and door button on your desk if you're sure the person is the real resident.

"Good afternoon."

the voice of a milkman in front of the window, he put in the entry request through the hatch. But he doesn't give his ID yet.