It was a pita, lasted less then a day. Now if they had a voice command unlock i would use that.
I'm still waiting for my dermal cell implant, then I won't have to worry about unlocking and security......
Too many problems. It had difficulty recognizing me if I was either wereing or not wearing my glasses and also stumbled if I hadn't shaved in several days or changed from a goatee to a beard. Also had trouble recognizing me in extremes of lighting conditions. Too much of an inconvenience.