When Matias Duarte tried to unlock his Nexus Galaxy on-stage at today's Samsung event things didn't go so well. Some combination of his makeup and the lighting conspired to keep him from getting into his device, but after spending a little time with one ourselves we can confirm that it does indeed work -- and quickly. To program the feature, go into the settings and it'll train itself to recognize your mug. As it locks in a ring of circles frames your face and, hey presto, it's ready. After that you set up a backup form of identification and you're good to go.
Once it's ready we found it takes only a s
