...which is not practical and therefore only of consequence for a person of interest, i.e. a criminal or suspected criminal. I'm not saying it isn't a big probl

...which is not practical and therefore only of consequence for a person of interest, i.e. a criminal or suspected criminal. I'm not saying it isn't a big problem, (suspicions can be invented) i'm just pointing out it is unlikely to lead to a dystopia. I think that laws will be drafted to invalidate most data as evidence in court (since minor offenses are universal and can't all be prosecuted).