Technology developed by @Affectiva (@MIT-backed startup) can read and analyze human emotion from a single expression. Hershey Co. ($HSY) worked with @wildbluetech to create a Affectiva-powered kiosk that would drive consumers down the grocery aisle to get a free Hershey sample - once they smiled into the machine. @KelloggUS has also used this technology to test reactions to three different versions of an ad. - Link

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