Last year I saw a guy pitch a b2b startup that used recognition of tiny specificities in posture, gait, facial expressions etc to verify identity, like behaviometrics rather than more common forms of biometric authentication – that's what I thought this post was going to be about based on the title. In any case that stuff definitely seems to be heading in the direction the writer is thinking of, possibly a more illustrative example than any he brings up. Much more 'friction-free' as rather than taking a moment to verify yourself, you're being observed and verified all the time. Yay