And it wasn't just what is shown on the video. It was also checking that the customer's card number wasn't on the blacklist, making a phone call to the authorization center to get an auth number, filling in the form by hand with the amount, date... And at the end of the day, compiling all the forms from all the sales, adding them up on a special form, putting everything in a special envelope and mailing it or handing it over in person at the bank branch for processing.