An information processing device, comprising: display means for displaying information; operation means, having a contact region corresponding to a display region of the display means, for detecting a contact operation by a finger in the contact region and outputting a position signal indicating a position of the contact operation in the contact region; processing menu display means for causing the display means to display a processing menu for selection of various processing; processing decision means for deciding processing of the processing menu corresponding to the position of the contact operation in the contact region, based on the position signal for a third point (P2c) from the operation means; processing execution means for executing the processing decided by the processing decision means on a target range (A1, A2) of the display region; characterized by a range decision means for deciding said target range (A1, A2) based on the position signals received from the operation means for two points (P2a, P2b) specified by a first and a second finger in a contact operation; and an identification means for identifying whether a hand performing the contact operation by the first and the second finger in the contact region is the right hand or the left hand, and for identifying the first and the second finger of the contact operation, wherein the processing menu display means is configured to control the display means to display the processing menu at a position relative to the target range (A1, A2) of the display region associated with the combination of the hand and the first and the second finger, based on the hand and the first and the second finger identified by the identification means, such that the two points (P1a, P1b) are specified by the first and the second finger and the third point (P2c) can be specified using a third finger. display means for displaying information; operation means, having a contact region corresponding to a display region of the display means, for detecting a contact operation by a finger in the contact region and outputting a position signal indicating a position of the contact operation in the contact region; processing menu display means for causing the display means to display a processing menu for selection of various processing; processing decision means for deciding processing of the processing menu corresponding to the position of the contact operation in the contact region, based on the position signal for a third point (P2c) from the operation means; processing execution means for executing the processing decided by the processing decision means on a target range (A1, A2) of the display region; characterized by a range decision means for deciding said target range (A1, A2) based on the position signals received from the operation means for two points (P2a, P2b) specified by a first and a second finger in a contact operation; and an identification means for identifying whether a hand performing the contact operation by the first and the second finger in the contact region is the right hand or the left hand, and for identifying the first and the second finger of the contact operation, wherein the processing menu display means is configured to control the display means to display the processing menu at a position relative to the target range (A1, A2) of the display region associated with the combination of the hand and the first and the second finger, based on the hand and the first and the second finger identified by the identification means, such that the two points (P1a, P1b) are specified by the first and the second finger and the third point (P2c) can be specified using a third finger.