Shoppers could soon be automatically recognised when they walk into a shop using a controversial new camera.rnrnCalled Facedeals, the camera uses photos uploaded to Facebook to recognise people as they walk in.rnrnShoppers who agree to use the system, which has not been developed with Facebook, will be offered special deals.rnrnThe Facebook camera requires people to have authorised the Facedeals app through their Facebook account. rnrnThis verifies your most recent photo tags and maps the biometric data of your face. rnThe system then learns what a user looks like as more pictures are approved.rnrnThis data is then used to identify you in the real world.