Smart Coffee Lid

AMonline.com: Plastic coffee lids for take-out hot drinks, which turn bright red, are now available to all coffee lovers across America after Smart Lid Systems sign international license agreement, following global industry recognition.
The multi-award winning color changing coffee lid is set to become a worldwide hit after Australian inventors secured an international license agreement. Smart Lid Systems, the product development firm behind the lid, has appointed Thermo International as their key global manufacturer.
The innovative lid alerts consumers their coffee/tea may be too hot by changing from a dark coffee bean color to a bright red when the lid is applied. Secondly, the lid visually indicates whether or not it is securely attached to the takeaway cup, placing coffee house owners and consumers at ease regarding the safety concerns of hot coffee spillages.
Localized distribution rights are now being negotiated across USA and Europe with manufacturing underway.
White lids offer no visual aids where the ideal consumption temperature for coffee is 152 degrees F, while liquid burn hazards commence at 140 degrees F. The Aussie lid completes the color change at 115 degrees F, allowing a ‘red glow’ to warn drinkers of the hot contents.
Ms. Freya King, owner of Sydney based cafe ‘The Bean Palace’, stated “once the lid is on the cup all staff and customers can see its hot and that the lid is on tight, it should be an industry standard as the extra cost is worth it”.
New Coffee Lid Changes Color Based On Temperature [AMonline.com]