This is just a concept, which I usually don't post about, but I thought this was a really cool idea. Basically, they are rings that store personal information, like what would be on a business card, and when two people shakehands, it puts the rings close together and they exchange their stored information. That way, you can not worry about finding their business card later or getting it all into your PC, it would be done automatically for you. I'd be interested to see the technology used to pull this off. Bluetooth?
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