Emotient's Google Glass app tells you how others are feeling

It's not always easy to read someone's emotions -- and that's a problem for retailers, which can't easily tell if their products intrigue you or simply confuse you. They may not have to guess for much longer, though, as Emotient has launched the private beta for a Google Glass app that identifies feelings using the device's camera. The software scans faces for emotional cues that reflect an overall sentiment, even if it's subtle; the app can tell if you're mildly pleased, for instance.

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