It's a simple sheet of paper, some text, and a touch of color, but secrets lie hidden on the surface, invisible specks that hold enormous implications.

"It's not something that's sort of sunk into general public consciousness by this point," says Seth Schoen, a cyber investigator.

Schoen's base of operations is San Francisco's Electronic Frontier Foundation, a civil liberties organization focused on privacy.

Monday, May 18, 2009
CBS News

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