To suppress overhead of communication time, even when there is only one communication interface of a security control part.

A read/write apparatus for noncontact communication includes a switching function part 14, which is respectively connected to a main control part 11 and an RF control part 13, connected to one communication interface of a security control part 12 and allowed to be switched to one of connection states, i.e. a first connection state that the main control part 11 is connected to the RF control part 13; a second connection state that the main control part 11 is connected to the security control part 12; and a third connection state that the security control part 12 is connected to the RF control part 13, according to the control signal from the main control part 11.