Byeolchimdae is a cafe in Gwangalli, Busan, where customers look out at Gwangandaegyo from seats facing Gwangalli Beach. Coffee, carbonated drinks, apple juice, cereal, and toast are set out self-serve, and guests take as much as they want. Shoes come off at the entrance, and orders are placed by QR code; when a drink is ready, a phone notification and a call come through. Hair and cracker crumbs are left on the lying-down spots on the second floor.