Camera Phones Read Hidden Messages in Print
 

pikine writes "As reported by BBC News, Fujitsu has developed a technology that encodes 12-bytes of information in a printed picture by skewing yellow hue, which is difficult to discern by human eye but fairly easy for camera phones to decode using software written in Java." The first target uses are promotional contests and competitions, not entirely unlike those game pieces that need to be viewed through a colored filter.



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