Tech Industry
Mother's Day 2018: The best tech and gadgets for your mom this year
The Cocoro Meter measures the level of an enzyme found in saliva to see just how frazzled you are.
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Cocoro Meter
On Dec. 6, 2005, Isako Tanaka, an employee of Japanese medical equipment maker Nipro, displays the Cocoro Meter, a device that gauges stress levels by measuring the level of the enzyme amylase in saliva. The gadget sells for 19,800 yen ($164).
Caption by: Bill Detwiler
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