I have a friend who is on the board of Marriott, he told me more hotels are requiring a key to take the elevator to a guest floor in order to make guest go downstairs to meet folks coming to see them at the hotel. The main reason why they do this is hookup apps being used to mug, scam or simply rob people staying in the hotels. It's a hearsay but from a good source!
Pardon me @Milo Farnsworth for taking your thread slightly off subject.