Abstract: Systems and methods for associating content with an image bearing surface. In accordance with a first embodiment of the present invention, a method, operable at an electronic interactive device, comprises accessing a first image, e.g., identifying the content, on a surface, wherein the surface comprises an encoded pattern of location information on the surface for providing location information to the electronic interactive device. The method further comprises decoding the first image to associate the location information with second image information, e.g., of the content, of a second image on the surface.

Abstract: A mark on a surface in sensed by a pen as the mark is made on the surface using the pen. The surface has printed thereon a pattern of markings that define a two-dimensional coordinate system. Stroke data associated with the mark is stored. The stroke data includes coordinates corresponding to a subset of the pattern of markings traversed by the mark. The stroke data is associated with a region of the surface. The stroke data is operated on according to an operation associated with the region.