Best Idea I've seen in a while

From TreeHugger.com:

Fading Barcode

A group of designers have decided that there’s got to be a better way to find the freshest produce in a supermarket. Rather than trust your own senses, they think a fading barcode is the right solution. They’ve come up with a barcode that starts off as a usual barcode, then slowly fades along with the product’s freshness. Not only would you be able to see which fruits and veggies have just been delivered, but when the barcode is nonexistant, that indicates to the store that it’s time to toss the product rather than sell it.