Since ALPRs are effectively fixed in a geographic place with gaps and AFAIK do have relatively low retention periods (I need to double check this), they don't offer the same "whole person movement" data that a phone would when described in Carpenter.

Will be interesting to see how this goes, and I'm sure ALPR density may play a part in it, but for now I don't think it violates someone's privacy under the 4th amendment.

This debate also ties heavily into one around the surveillance network created via camera networks like Ring.