sciencehabit writes: Researchers have invented a new form of secret messaging using bacteria that make glowing proteins only under certain conditions. In addition to being useful to spies, the new technique could also allow companies to encode secret identifiers into crops, seeds, or other living commodities.
"The Avis WIZARD decides if you get to drive a car. Your head won't touch the
pillow of a Sheraton unless their computer says it's okay."
-- Arthur Miller