This is incredible and so scary!!
The video below shows two men approach the counter. While one man asks the attendant to grab some items from behind the counter, a second man installs a fake credit card scanner. He simply pulls a device that looks exactly like the front of the credit card machine from his bag and places it over the station's payment terminal.
The entire installation only seconds!
Watch below and if you blinked... it happens at the :18 mark