This Refrigerator Only Opens if You Smile

If you're hungry, you better smile: Researchers at the University of Toyko have developed a smile-activated refrigerator, which requires users to flash a grin before entering. The system, which is called the "The Happiness Counter," aims to naturally encourage smiling in our every day lives. Equipped with built-in Sony CyberShot digital camera that features smile-recognition technology and an attached light sensor, it can sense when a smile has been flashed and unlocks the refrigerator door. Alt...