
Cities are increasingly becoming computational environments with distributed and redundant sensor networks. Connecting these sensors to a centralized AI controller is an obvious next step. For implementation details one can look at China and how the Chinese government controls major metropolitan areas with 24/7 monitoring and enforcement.
Enforcement will mostly target the poor and destitute so the members of elite socio-economic classes will need markers to differentiate themselves from being targeted by autonomous police robots and rule enforcers.

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@StrayClimb Yes, I was thinking along the lines of SF implements AI governance and autonomous police force and the AI requires all local residents to wear something to clearly identify their function and social standing within the city.
@MarkIngraham mentioned cell phone tracking and Teslas also qualify because they're basically mobile sensors connected to the Tesla AI network.
@DavidKc2f9 okay cool and I assume you're talking about the US, and if a single metropolitan area does it that's enough?