A swipe scanner for scanning a graphic image printed on a surface. The surface has a position-coding pattern imposed with the graphic image. The swipe scanner comprises: (a) a first image sensor positioned for imaging portions of the surface during a swipe of the surface, each imaged portion containing...http://www.google.com/patents/US7997490?utm_source=gb-gplus-sharePatent US7997490 - Handheld scanner for coded surfaces
