People tend to check in during these times:
Beautiful female PM's on 11th floor in north tower.
Minnie Yan knows where to store your bicycle in north tower.
Widows really sucks
in elevator, double-tap on buttons can cancel a selection.
Work hard, play harder
Windows really sucks.
Don't use elevator #10 in bldg 2. A few co-workers have been locked in a few times there.