In an acceleration sensor, a first vibrator is arranged on a surface of a substrate such that the vibrator can vibrate in an X-axis direction. User applications required for the electronic commerce service, music delivery service, and position information service are respectively configured as service objects each having a server facility, and further a local gateway is provided, whereby various types of services can be used through a browser. Therefore, the indicator light will have to be replaced less frequently, thereby reducing a burden on the user.