Perishable Smart Label
This is another of those “Why didn’t I think if that?” inventions. It’s a simple idea, a label that changes over time to indicate the quality of perishable goods.
The example given (well doodled by the looks of it) of a carton of milk changing from green to red does clearly indicate what you are buying. Seeing a big warning red label on something is a lot more obvious than a tiny date hidden some where on the packaging.
As far as I know the smart label is available yet (information is a bit scarce), but keep your eyes open for color changing grocery shelves.
[Found via Yanko Design]