Authentication of credit card payments made over a network, using a credit card terminal in conjunction with a microcomputer, whereby the terminal and microcomputer are configured as separate units to increase security

摘要

System comprises a microcomputer (3) connected to a network (1) via a modem (4). Also connected to the modem is an credit card payment terminal (5). Between terminal and microcomputer and the modem is a switch (7) with a controller (8). The controller commands the switch such that only the microcomputer or the payment terminal are connected at any one time.