For instance, if you are smiling, it could automatically send a smiley face and vice versa.

Similarly, Facebook has always been looking for ways to increase its reach of targeted advertising.

Based on what youve read before, products and services tap matching to that are listed before you.

Facebook wants to SPY on you through your webcam

And, Emotion detection technology is the next phase of this.

The other big way that Facebook is doing this is through the recent reaction buttons.

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source: www.techworm.net