State change notification device, body-mounted communication device, program, and state change notification method

摘要

An embodiment of the present invention not only protects user's privacy but also reliably notifies a user of a change in state of an external communication device. A state change notification device (1) includes: an information receiving section (11) that receives state change information in a case where a change in state occurs in a device (100, 200, 300, or 400) in which an external communication device (500) or the state change notification device (1) is provided; and an expansion control section (12) that controls inflation of a balloon (24) provided in a wristwatch-type communication device (100) so that an inner pressure of the balloon (24) will be a user-perceivable pressure.