| 摘要 |
<p>The invention relates to a server for supporting a point of sale transaction, the server comprising: an input for receiving from a point of sale terminal transaction details pertaining to a customer and a second input for receiving update information from an update service; a processing engine arranged to receive the transaction details wherein the transaction details include product data from at least one product, the product data including first price data, including at least a first price for the product, wherein the processing engine is configured to receive second price data from the update information, the second price data pertaining to the at least one product and to compare the first price data with the second price data and issues a voucher request based on the comparison; an update component configured to issue periodic polling messages, and responsive to at least some of said polling messages to receive said update information at the second input, wherein the update information includes at least one of a price file containing the second price data and a configuration file containing configuration parameters for controlling operation of the processing engine.</p> |
