Abstract: The system and application for smart devices is a system that functions in conjunction with an application that operates on a handheld electronic device for handling restaurant transactions. The application allows a customer to reserve a table at a restaurant, order their food before going to the reserved table, and pay the bill at the touch of a button using their mobile phone or device. The application can also provide delivery service for food orders from restaurants/cafes and many associated functions. In addition, the system includes plastic cards with a radio frequency identification device (RFID) for each user. An RFID reader is mounted at the door of the restaurants, such that a user can automatically pay their bills upon exiting a restaurant.