An information processing apparatus is connected to a device fixed to a hand of a user, the device including a finger position sensor configured to detect a direction of a fingertip regarding one of an index finger, a middle finger, a ring finger, and a little finger of the hand of the user. The information processing apparatus acquires, on the basis of the direction of the fingertip regarding the one of the index finger, the middle finger, the ring finger, and the little finger detected by the finger position sensor and received from the device, information regarding an angle between the finger and a finger adjacent to the finger and estimates, on the basis of a result of the acquisition, an angle between respective fingers of the index finger, the middle finger, the ring finger, and the little finger of the hand of the user.