Submission + - Camera phones read hidden messages in prints
pikine writes: Reported by BBC News, Fujitsu 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. From the article:
What are the other interesting uses of steganography?Pictures printed with the technique look perfectly normal but a camera can see the code printed into the image. The technique can currently store just 12 bytes of information — soon to rise to 24 — the equivalent amount of data in a barcode. That data could be a phone number, a message or a website link. Printed materials can then connect to the online world by storing information which tells the phone to connect the web.
