Control method of a control system and a control system

摘要

An application that runs on a browser of a terminal can appropriately control a device connected to a controller. In a POS system 1, an application AP that runs on a browser of the tablet device 10 requests a controller 11 for control of a device connected to the controller 11. The controller 11 from which device control was requested establishes control of the device, and after the controller 11 establishes control of the device, the tablet device 10 establishes control of the device by the application AP through the controller 11.