This information processing device selects a sensor to be controlled according to the activity plan of a user. The information processing device is attached to the user's body. The information processing device is provided with: a plurality of sensors; an acquisition means for acquiring an activity plan of the user; and a control means that selects a sensor to be controlled from among the plurality of sensors on the basis of the acquired activity plan. The control means activates the sensor suited for the activity plan from among the plurality of sensors and inactivates sensors that are not suited for the activity plan from among the plurality of sensors.