Serious comment: We all carry around a license plate almost all the time - your phone. The data harvested by your phone (all of which is accessible to authoriti

Serious comment: We all carry around a license plate almost all the time - your phone. The data harvested by your phone (all of which is accessible to authorities) provides a complete history of you (ref. intended), where you've been, who you've met, and a proxy for what you're thinking about. How long before it's mandatory to carry one?