They do have those key checks at elevators in some of the casino hotels in Las Vegas and in Reno, NV.

You'd be surprised how many people wasted on booze or inconsiderate people try to loiter and cause ruckus in the halls if there's no one key checking.

And, key checks does reduce the on the whim thief.

Everyone knows that management is concerned with the bottom line, and they wouldn't have key checks done if they thought it was a waste of money.

It's does not make things 100% safe, but it does reduce the odds that there's an on the whim thief who decides to follow housekeeping into a room, grab something and leave.

Personally, I've had stuff stolen from a hotel room while out at a hotel that didn't have such checks, so I don't think the checks are stupid or a waste.

I'm hoping none of you have to experience such a loss or even more, but if you have such an experience, you might appreciate such checks a bit even though it doesn't reduce crime 100%.