privacy and public identity

Privacy advocates have started wearing dark glasses to protect themselves from face recognition algorithms. Good for now, but sooner or later algorithms will get better and become able to identify you from some ineffable combinations of subtle static and dynamic physical features like your hairline and the way you walk. At the end, we will all have to wear burkas and voice distortion masks, obliterating our public identities in the name of preserving our private identities. (This will be the physical analogue of the current mass migration away from public social media spaces to private messaging platforms.)