Timestrips time food age -- but do we want to know? - Engadget

""Timestrips" for keeping track of aging food. The single-use labels have an adhesive backing and can measure whether that block of cheese is ready for a sandwich or a science experiment."

Niffty product. Makes you wonder why we don't have more useful implications of technology such as this in use today? Now I can know when things go bad in my dark eerie fridge.