I have set up unlocking by face recognition on my Moto G 2nd gen. However, there are no instructions on haw you use it. I have tried holding it up and looking into the camera but nothing happens.  Also, the staying unlocked at home doesn't work. I set it up and it recognised my address correctly but the phone still locks itself when I am at home.  Any help with either problem would be gratefully accepted. Webroot support offered no help whatsoever.  Their only suggestion was to try the "community".