460. Bright Idea: Smart Lids August 23, 2007Posted by Matt Fleming, PsyD in Food and Drink, Product, Video.
These disposable coffee lids are heat-sensitive, going from red to brown when the contents are no longer too hot to drink. The lid will also indicate if it is properly sealed on the cup (the entire edge will be brown). Costing only 1-2¢ more per lid, the company plans to go global this year. Their website HERE; Via BeyondTomorrow.
Check out this 37-second video of the lid in action: