Given enough time and depending on how this works out I don't think it is an impossibility that this will eventually be implemented in western countries.

One might object that no sane people would allow this, but we're already allowing mass surveillance. After 9/11 we allowed legislation that is basically one massive infringement of privacy. All it'd take is gradual implementation and some kind of "starter event".

Someone already came up with a Yelp for people app, called Peeple. Thankfully the backlash made it pretty clear there was little, if any, support for the concept.