A portable handheld device for wireless order entry and real time payment authorization may include a portable housing, a display carried by the housing, an order entry input device carried by the housing, a transaction card input device carried by the housing for reading user sensitive information from...http://www.google.com.au/patents/US7721969?utm_source=gb-gplus-sharePatent US7721969 - Portable handheld device for wireless order entry and real time payment authorization and related methods
