Abstract
Provided is an information processing device including a measured value acquisition section, a contact event detection section, and an activeness determination section. The measured value acquisition section acquires a measured value indicative of a change in the motion state of a part of a housing. The contact event detection section detects, on the basis of the measured value, a contact event that has occurred on the part of the housing. The activeness determination section determines, in a case where the contact event is detected on a moved portion included in the part of the housing, that the contact event is active.