I’m Sorry Bob, that’s not a smile, it’s a sneer.

Japanese railway to make workers take ‘Smile Scan’ test – The Mainichi Daily News
The smile-measuring software has been developed by Kyoto-based precision equipment maker Omron Corp. The device analyzes the facial characteristics of a person, including eye movements, lip curves and wrinkles, and rates a smile on a scale between 0 and 100 percent using a camera and computer.