Looks like a very cool tech that will have application from the whimsical to the serious.  This would make a great watermarking technology... Until someone makes a filter.

With Kameraflage, now you'll be able to plant subliminal messages on T-shirts, movies and billboards that can only be seen with digital cameras. This context-sensitive display technology, developed by Sarah Logie and Connor Dickie, works by using colors that are invisible to us but easily picked up by the silicon chips in digital cameras. As you can see, the lovely model above is wearing a shirt that only reveals that cloud's lightning bolt when seen through an iPhone's digital camera, although any ordinary unmodified digital camera would get the same result. She just as easily could have placed her phone number in that cloud. Hmm. Let's think of some other uses for this cool tech.

Link: http://gizmodo.com/gadgets/more-than-meets-the-eye/kameraflage-images-only-visible-through-a-digital-camera-282689.php

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