Abstract: A display system includes a display with a touch panel and an information processing apparatus including circuitry to detect connection with the display, determine whether an application executed by the circuitry of the information processing apparatus is a specific application registered in advance, transmit, based on a determination that the application is the specific application, screen data of the specific application to the display whose connection is detected, and receive coordinate data indicating an operation position on a screen displayed by the display based on the screen data. In the display system, the specific application executes a process according to the coordinate data.

Abstract: An information processing server is communicably connected with a display apparatus and a terminal apparatus via a network. The server includes circuitry to cause the terminal apparatus to display an object based on object information including time information indicating a time at which the object was displayed by the display apparatus and a record including audio or video recorded by a device communicably connected with the terminal apparatus, generate screen information of a screen that presents, based on the time information, instruction information for playing back the object at the time indicated by the time information or the record including the audio or the video related to the object, and transmit the record, the object information, and the screen information representing the screen to the terminal apparatus.

Abstract: A device management system includes a first device including first circuitry to output a device identifier of the first device, a second device including second circuitry to acquire the device identifier output by the first device and transmit the device identifier to a communication terminal that communicates with an information processing server, and the information processing server. The information processing server includes third circuitry to receive the device identifier from the communication terminal; and enable the first device to be used in a communication with the communication terminal to process information relating to the communication in response to receiving the device identifier.