To solve a problem of being difficult to gather, for example, in one place by solving a problem of being difficult to make an album together under an intention of close friends, a group unit of a tour travel, mutual friends, and a unit of the other plural persons.

For solving the problem, this information processor is an information processor connected to plural user terminals being the making user side of shared data via a network, and has a control unit for permitting the connection from at least two or more user terminals among the plural user terminals, and a control unit for controlling so as to display a second input area for data input from the connection-permitted plural user terminals while displaying an image of the shared data held in share between the plural user terminals.