We must stop smiling our way towards a surveillance state ZDNet

In the last few years facial recognition has been gradually introduced across a range of different technologies. Some of these are relatively modest and useful; thanks to facial recognition software you can open you smartphone just by looking at it, and log into your PC without a password. You can even use your face to get cash out of an ATM, and increasingly it's becoming a standard part of your journey through the airport now. And facial recognition is still getting smarter. Increasingly it's not just faces that can be recognised, but emotional states too, if only with limited success right now.