This seems like a really neat idea. Fruit might be losing the stickers soon and moving on to laser tattooing. Stickers are annoying, and wasteful, while a laser etching isn't a problem at all.
A new technology being used by produce distributors employs lasers to tattoo fruits and vegetables with their names, identifying numbers, countries of origin and other information that helps speed distribution. The marks are burned onto the outer layer of the skin and are visible to discerning consumers and befuddled cashiers alike.