Me just a few minutes ago (real life, just the room number is not real):
At the reception:
Me: Sorry, my key does not seem to work anymore.
Reception: What is your room number, sir?
Reception: Mr. Halbheer?
Reception: Let me give you a new key
I understand: A scammer would have answered with “no” if he would not be me. Everything else would have been unfair.
*** This is a Security Bloggers Network syndicated blog from Roger Halbheer on Security authored by Roger Halbheer. Read the original post at: https://www.halbheer.ch/security/2017/07/24/hotel-security-the-protocol/