Commonwealth v. McCarthy (Massachusetts high court, 2020): four cameras on two bridges did not violate privacy, but the court said widespread plate reader use could.
We conclude that, while the defendant has a constitutionally protected expectation of privacy in the whole of his public movements, an interest which potentially could be implicated by the widespread use of ALPRs, that interest is not invaded by the limited extent and use of ALPR data in this case.
Commonwealth v. McCarthy (Massachusetts high court, 2020): four cameras on two bridges did not violate privacy, but the court said widespread plate reader use could.