It is an object of the present invention to provide a technique capable of performing user estimation without making the user aware of it. The appliance has a first sensor input unit that inputs a plurality of control commands for controlling an operation, and estimates the user based on the control command input to the first sensor input unit and an operation feature amount at the time of inputting the control command. The first sensor input unit includes a touch panel. The operation feature amount includes an operation position of the touch panel, an electrostatic capacitance value corresponding to a pressing of the touch panel, and a time-dependent change pattern thereof.