... be paper or PET material, with a wide range of applications, like hidden marketing, advertising,promotions, ticketing, tracking2 ... metallic laptop case. These stickers are about the thickness of a penny due to the extra layer. Mount ... -Payment-Mobile payment, PayPal, Google Wallet, Ticketing, Boarding pass, Point of Sale, Coupons, Tour guide, Turnstiles, Vender, Parking meters, Loyalty system ...