I want to implement card swiping for a website's access and to identify the customer's count of visit. This website is controlled by the staff of an airport lounge in front of the customers and the staff ask for the swipe there after customer does that.
I want add some numbers so the server can understand the customer's visit count e.g: for the first visit he/she will see a page asking for the payment, after couple of days/second time he/she swipe so the server understand his second visit and land the customer to second visit page.