Invisible ads that only your cellphone can see
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Steganography might be an antique technique used by Greeks to avoid critical messages from interception. For instance, they tattooed messages on shaved heads that were then covered by the regrowth of hair.
Steganography makes a come-back as a “sublimage” for cellphones or said differently, a new communication tool to bundle print magazines with adverts for instance. Fujitsu is pushing a technology that can encode data into a picture that is invisible to the human eye but can be decoded by a mobile phone with a camera, the BBC reported earlier this week.
The technique “works by taking advantage of the sensitivities of the human eye, which struggles to see the colour yellow,” and can currently store just 12 bytes of information, the equivalent amount of data in a barcode.
The first commercial use of the technology is in Japan where a Music Club has embedded codes into flyers it sends to subscribers, but we guess it could be possibly combined with a click-to-call moblie service.
Feb 17, 2007 | By Nuno
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