Artists have licensed their work since the beginning of copyright law--but those kinds of exchanges are far easier to do with digital files, pixels and clicks than they were in the old world of film and paper contracts.

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But people eventually will want more than just pixels and digital trophies, says Kiip Chief Executive Brian Wong.

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Digital systems, which process pixels one at a time, have to translate the two-dimensional image into a one-dimensional stream of data.

ECONOMIST: Analogue computing