A terminal device according to an embodiment includes: a microphone; a communication unit that performs communication via a network; a first sensor that obtains depth information; a first face detecting unit that detects a face and the distance to the face based on the depth information; and a processor. When a communication program, which is meant for making the processor perform transmission and reception of messages including voice messages and which has a sound input mode for enabling collection of sounds using the microphone and transmission of voice messages based on the collected sounds, is executed, and when a message is received by the communication unit under the control of the communication program being executed; the processor performs first-type face detection using the first face detecting unit and controls turning ON and turning OFF the sound input mode according to the result of the first-type face detection.