A haptic signal distribution system capable of distributing haptic synchronous signals includes a master haptic device and groups of slave haptic devices. In order to enable separate testing of the circuits, for example in accordance with the macro test approach, in the signal path a special seam circuit is inserted. The performance projection system measures user application software and surrogate program performance during execution on currently existing IHSs. Moreover, according to the present invention, a metal thin film is formed using the colloidal solution in which a metal material having a small work function is dispersed on the layer containing an organic compound by a coat method and made it a cathode or one portion of a cathode. Various other features enhance the credit card system which will allow secure trade without the use of elaborate encryption techniques.