I work in a secured facility and in order to get into any of our doors you have to swipe your name badge in front of this little magnetic card reader. The readers are crappy and delayed. It takes them a while to read your card. In order for the reader to work well you have to stand really close to the door.
The problem is that people coming out of the facility do not need to swipe their cards to exit and there are no windows on the doors.
A day ago I was in a huge rush so I charged through the secured door and drilled a lady who was standing out the outside of the door swiping her card. I nailed her right in the shoulder and she went flying backwards. Luckily someone was behind her and caught her before she fell.