| 摘要 |
PCT No. PCT/GB92/01309 Sec. 371 Date Jul. 13, 1994 Sec. 102(e) Date Jul. 13, 1994 PCT Filed Jul. 16, 1992 PCT Pub. No. WO93/02430 PCT Pub. Date Feb. 4, 1993A data transfer system transfers data between a smartcard and a reader by transmitting a series of binary pulses, where the absence or presence of single predetermined pulses within the series communicate the data bits. By providing a function mode switch on the card, it may be used both for both private transactions and authorizations at a distance. |
