| 摘要 |
A data control system allows non-point of sale devices (135, 155) on the LAN to receive data from an external network (160) when established conditions are met. The data control system may allow the data to be sent to a non-point of sale device (135, 155) only if the data has not been received via a secure connection reserved for point of sale devices (125, 145). The secure connection is, for example, a virtual private network connection. The data control system may also allow the data to be sent to a non-point of sale device (135, 155) only if the data is associated with a communication session initiated by the non-point of sale device (135, 155). The data control system may also allow the data to be sent to the non-point of sale device (135, 155) only if it is not received from a restricted source. The restricted source may be, for example, a payment host (170), a secure host (180) or any unidentified source. |
