Police in the UK are testing controversial high-tech facial-recognition cameras. But critics say this technology raises serious privacy concerns. Now, a court will decide. For more news go to: http://www.dw.com/en/ Follow DW on social media: ►Facebook: https://www.facebook.com/deutschewellenews/ ►Twitter: https://twitter.com/dwnews ►Instagram: https://www.instagram.com/dw_stories/ Für Videos in deutscher Sprache besuchen Sie: https://www.youtube.com/channel/UCMIgOXM2JEQ2Pv2d0_PVfcg