Japanese scientists have developed a refrigerator that opens only when you smile. :-)

Scientists at the University of Tokyo Sony CSL (Computer Science Labs) have come up with an ingenious way of cheering people up- forcing them to smile in exchange for easy access to their food.


 Attaching a device called as a “Happiness Counter” to a regular refrigerator, Sony’s scientists are hoping to make us happier people.

The technology, which scans a person’s face as they stand in front of their food treasure trove, detects whether or not they are smiling and, reading anything other than a big, cheesy grin, makes the door difficult to open.
(Source)
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