Payment terminals are becoming increasingly popular, not only at gas pumps, ATMs, and vending machines, but also at airport self-service kiosks, parking lots, pay-at-the-table stations (and fast food kiosks), public transit, and many other everyday situations. Whether you’re at the vending machine grabbing a snack or at the unattended kiosk paying for a parking ticket, at one point or another, you have interacted with a payment terminal and have likely enjoyed the swift checkout experience.