Finally a use for Video Phones

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Video calling has never taken off despite a long history of attempts starting in 1955, and culminating in today’s front-facing cameras on 3G handsets.  But finally someone has worked out a useful application: signing for the hearing impaired. 

The technology behind it compresses data with attention to skin tones (hands/face) as that’s what is conveying the important information.  That’s needed because 3G hasn’t properly hit the US yet, so the compression needs to work over GPRS-speed connections; also, sign-language is too fast for existing compression methods.

More over at SciAm.

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