Abstract: A printer includes a processor configured to be communicatively coupled to an external device and a POS terminal on which a web browser operates, and enabling control of the external device by a control object with respect to the POS terminal based on relationship information, in which the processor enables the control of the external device by the control object with respect to a first POS terminal based on first relationship information, deletes the first relationship information while the control object is not deleted when the control of the external device by the first POS terminal ends, generates second relationship information indicating a relationship between a second POS terminal and the control object when a request for the external device from the second POS terminal is received after deleting the first relationship information, and enables the control of the external device from the second POS terminal by the control object.

Abstract: A printer includes a processor configured to be communicatively coupled to an external device and a POS terminal on which a web browser operates, and enabling control of the external device by a control object with respect to the POS terminal based on relationship information, in which the processor enables the control of the external device by the control object with respect to a first POS terminal based on first relationship information, deletes the first relationship information while the control object is not deleted when the control of the external device by the first POS terminal ends, generates second relationship information indicating a relationship between a second POS terminal and the control object when a request for the external device from the second POS terminal is received after deleting the first relationship information, and enables the control of the external device from the second POS terminal by the control object.

Abstract: A control apparatus includes an HTTP server that communicates with a terminal, a device interface that communicates with a device, a first device control unit on which a device driver corresponding to the device is mounted, a second device control unit that uses a driver that is able to correspond to the device, and a process unit that selects the first device control unit or the second device control unit based on control information received from the terminal by the HTTP server, generates a command based on the control information, and transmits the generated command to the device by the device interface.