Intelligent software systems are already able to scan and identify individuals from video images.

ECONOMIST: The surveillance society | The

Other innovations include placing a QR code on a pill-bottle label that consumers can scan with a smartphone to download a short video with information about the drug.

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Gamers simply hit the "SHARE button" on the controller, scan through the last few minutes of gameplay, tag it and return to the game-the video uploads as the gamer plays.

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