An automated method and system is provided for facilitating interaction between a consumer and a merchant using a strong security framework. An offer describing a product and a predetermined means for acceptance is presented via a display. Once the offer has been presented, if the consumer accepts, the...http://www.google.com.tw/patents/US20040172340?utm_source=gb-gplus-share專利 US20040172340 - SYSTEM AND METHOD FOR FACILITATING INTERACTION BETWEEN CONSUMER AND MERCHANT
