| 摘要 |
PURPOSE:To prevent completely forgery, by radiating light modulated with an intrinsic code, by the light modulated with a specified code in respect to a memory card used for a cash dispenser or the like. CONSTITUTION:Power E is supplied to each part by an irradiation light Le of an external light source, and a light Li modulated with the specified code from the external is received, and the output is subjected to a prescribed processing in a receiving part RC to feed it to a controlling part CT. In the controlling part CT, the specific code is decoded in accordance with the reception of the light Li; and if it is a preliminarily determined code, the intrinsic code is given to a transmitting part TC from a code generating part CG, and a light Lo modulated with the intrinsic code is radiated. |
