Patent ID: 7173722

Claim:
A method of printing a digital photograph including the following steps: (a) a computer system allocating and recording a photograph identification code; (b) the computer system automatically associating said photograph with said photograph identification code; (c) generating image data for printing said photograph and tag image data for printing a plurality of location-indicating tags with said photograph, each tag containing coded data identifying said photograph and identifying a location of that tag on the photograph; (d) printing the photograph onto a surface using the printer; (e) also printing on the surface, at the same time as printing the photograph, said plurality of location-indicating tags, using the printer, such that an optical sensing device, when placed in an operative position relative to the surface, can generate indicating data using at least some of the coded data, the indicating data comprising data regarding the photograph identification code and data regarding a location of the sensing device relative to the surface, whereby a computer system can determine a photograph identity and/or an action relating to the photograph using at least some of the indicating data, wherein said tag image data is generated by a coded data generator in said printer using said photograph identification code.