A better approach is to train everyone to be polite and helpfully walk the person to reception, who can arrange access.

Agreed! As a friendly favor, could you please post your full name, ZIP code, credit card number, and the 3 digit security code on the back?

- Love and peace, your neighbor on HackerNews

(which is to say, I think you know that you can be friendly without being foolish - but if not I'm going to really enjoy the gift of that credit card :))

> Maintenance should have the autonomy to do as they did

Really? We're talking about letting strangers in through the literal back door.