I like this perspective, it's the right balance between privacy and effective policing. If the data persisted over a long period of time, you could use it to de

I like this perspective, it's the right balance between privacy and effective policing. If the data persisted over a long period of time, you could use it to determine where someone travels and subsequently what activities they engage in and who they are connected to. As for automated law enforcement, I find it just creates a private market for subversion and doesn't really improve safety (e.g. many GPS systems will warn you about speeding cameras placed along the road so you can slow down in time).