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Laser-sensitive Paper?

Peter Lewis <[email protected]> comments regarding the heat-sensitive paper we mentioned in TidBITS-258:

Now what we really need is paper that changes colour when you run it through a laser printer, and then changes back after a few days. That way you could print out stuff, read it, and then reuse the paper the next week after the print had faded. Think of all the saved trees. Not to mention the fun you’d have using it for contracts.

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