The Future of Food Labels

Even the supermarket produce aisle is going high-tech. Those
sticky labels could soon be replaced by laser etching technology,
which the FDA recently approved for use on citrus-fruit peels.
A carbon dioxide laser beam nicks the skin a few millionths
of an inch deep, zapping the pigment. The result is a paperless
way to display logos, country of origin, and tracking numbers,
making it easier to trace every lemon, lime, and orange back to
its producer. And there's no gummy residue!
-Prevention Magazine, Winter 2012