Pay card system has card acceptance points with credit value reduction and/or incrementation stations linked to central processing stage for updated credit value for each chip card

摘要

The pay card system has a number of spaced chip card acceptance points (A) with a card value reduction and/or card value incrementation station (1,2,3), each card acceptance point having a short-term memory (4-6) for holding the credit reduction or incrementation protocol, linked to a protocol memory within a central processor (Z) which has a processing stage for calculating the updated credit value for each pay card.