Lucas123 writes "The same Xerox lab that brought us Ethernet, the GUI and the mouse demonstrated paper that can be reused after printed text automatically deletes itself from its surface in a day. Instead of trashing or recycling after one use, a single piece of paper can be reused up to 100 times. "The paper contains specially coded molecules that create a print after being exposed to ultraviolet light emitted from a thin bar in a printer. The ultraviolet bar itself is very small, so it can be used in mobile printers. The technology could also be useful for network printing."" Link to Original Source
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