For an example of real security, I was staying at the I-C in Geneva when both US President Bill & Hillary and Fidel Castro showed up. I had to first show my keycard (and not look like a protester) to get onto the hotel property. There were several guys with earphones standing around in the lobby. Then a hotel staff member asked to see ID and checked my name against a list before I could go up to my room. Actually the hotel staffer recognized me and just made a show of looking at the list.

When I got to my floor I must have near Fidels room as there was a Cuban guard stationed on the floor watching everything.