To give a simple security function in which only a user who receives an E-mail can take out stored data by entering an E-mail address of himself/herself and a user who does not receive the E-mail can not take out the stored data if the user who receives the E-mail is unknown when the E-mail is transmitted by storing scanner data in a Box.

The present invention is characterized by providing a simple password setting means for using an address of the E-mail to be transmitted as a password of the Box and a password authentication means for performing password authentication when the simple password means accesses the set Box.