Self-erasing paper

Xerox invented a new self-erasable paper thatfades to white after 24 hours. The invention "came from developingcompounds that change color when they absorb a certain wavelength oflight but then will gradually disappear." The paper is reusable thoughit appears you'll need a special printer to get images on to it. I cansee this working in the newspaper industry and such, but I can also seea ton of scam artists making people sign contracts that "change" overnight.

Source: gizmodo.comAdded: 5 January 2007