To provide a recording/reproducing apparatus and a control terminal capable of preventing video recording reservation from being canceled or modified accidentally.

A video recorder is equipped with an Internet connection function for performing video recording reservation on the basis of electronic mail transmitted from a control terminal such as a personal computer or a cellular phone connectable via the Internet. In this video recorder, an identification code is generated from random numbers and stored at the time of receiving video recording reservation mail, reservation list mail describing this identification code is transmitted to the control terminal, the control terminal describes a cancel number and returned mail is received, an identification code is read from the mail and collated with the identification code stored in the video recorder, the genuine of the video recording mail is confirmed on the basis of the result of collation, and the reservation is canceled.