How is this any different from what the Las Vegas (and countless other) casinos have done for as long as the technology has been available (even at very high cost). I don't disagree this is a slippery slope, but with the cost of the software and utility computing/processing power ever falling, from a technical standpoint this is an inevitability. I'd be very surprised if there weren't US malls (and even individual businesses) already running facial recognition software, it probably just wasn't highly publicized. If they want to keep it on the down-low, and are asked how they spotted someone, they can simply claim one of their security officers recognized them while monitoring the video feed.