An apparatus, system, and method of controlling transmission of an image, each of which: displays, on a display, an image to a plurality of users, the plurality of users sharing a use of the shared terminal; obtains, from a first privately-owned terminal owned by a first user of the plurality of users, first terminal identification information for identifying the first privately-owned terminal; transmits an authentication request for authenticating the first privately-owned terminal to a terminal management server, the authentication request including the first terminal identification information of the first privately-owned terminal; receives an authentication result of authenticating the first privately-owned terminal from the terminal management server; and when the authentication result indicates that the first privately-owned terminal is a legitimate terminal, and transmits a print request for printing data relating to the image being displayed to a printer through a network.