I think it extends to more than just walking. I snowboard as much as I can during the winter, and I can reliably pick out people I know from extreme distances j

I think it extends to more than just walking. I snowboard as much as I can during the winter, and I can reliably pick out people I know from extreme distances just by how they ride. The posture, size of the person, and other traits all add together to be a fairly unique signature.