An information processing device includes: a first detection unit that detects contact of fingertips on the basis of an output waveform of an acceleration sensor; a second detection unit that detects the contact of the fingertips on the basis of a change in electrostatic capacitance; and an operation control unit that causes the first detection unit to operate in a case of detecting timing at which the fingertips come into contact with each other, and causes the second detection unit to operate in a case of detecting timing at which the fingertips are separated from each other.