Okay kids, this is what we call, micro management leading to a hostile work environment.
I don't think I've worked for a company that gave a shit if I was 10 minutes late.
One company had a time clock that only kept time records to one decimal place of an hour. The clock literally couldn't differentiate between someone clocking in 5 minutes early, or 5 minutes late.
Anyone who cares about how trivially late you are, isn't someone worthy of your labor.