[throwanem]

Unless you walk around wearing a license plate around your neck, I'm not sure how it's relevant here.

[tomtoise]

One could argue that you're wearing a license plate 'on' your neck. Facial recognition and that.

[lozf]

Don't forget "Gait DNA"[0] for tracking your movement through a crowd, even when your face can't be seen.

[0] http://news.bbc.co.uk/1/hi/programmes/from_our_own_correspon...

[Aelinsaar]

I wear my face above my neck, thanks.