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+ - Canon DSLR Iris Registration - Biological Metadata->

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An anonymous reader writes "Canon is using iris (as in the iris of your eye) watermarking to take photographer's copyright protection to the next level. You set up the camera to capture an image of your eye through the viewfinder. Once captured, this biological reference is embedded into every photo you take as metadata. Canon claims this will help with copyright infringement of photos online.

http://www.photographybay.com/2008/02/09/canon-iris-registration-watermark/"
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Canon DSLR Iris Registration - Biological Metadata

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