Apparel is disclosed that can be worn to assist an interactive game in tracking the movement of the wearer. The fingerprint feature of the user’s finger is acquired by a fingerprint image input unit and a fingerprint feature extraction unit. The standard value storing part prestores an initial value of a standard value being the output value when the magnetic toner amount is the setting value. Also described is a method for making a memory or switching device. The transmission paths further include one or more redundant transmission paths, wherein signals directed to a faulty transmission path are redirected to an associated redundant transmission path.