I wonder if I got a license plate holder that said 'I do not consent to selling my position information' if I could sue them.
See Mosaic + Carpenter case which say “Yes, each scan is public; yes, aggregation is different. "
Carpenter shows the Court recognizes that aggregated location data can be constitutionally significant.
Individual observability vs. systemic observation: A passerby can note a single plate at a single place/time. But a system of ALPRs, distributed spatially and continuous in time, indexed and retained, can map a person’s entire movements, associations, repeated visits, and behavioral patterns. That’s exactly the “mosaic” insight: the whole reveals things the pieces don’t. (Maynard / Jones reasoning).