Commonwealth v. McCarthyAnnotate this Case
The Supreme Judicial Court affirmed the judgment of the district court denying Defendant's motions to suppress, holding that the limited use of automatic license plate readers (ALPRs) in this case did not implicate constitutional protections against unreasonable searches.
While police were investigating Defendant on suspicion of drug distribution they used ALPRs on two bridges to track Defendant's movements. The police accessed historical data via ALPR technology and received real-time alerts, the last of which led to Defendant's arrest. Defendant filed motions to suppress the ALPR data and the fruits of the arrest. The superior court denied the motions. The Supreme Judicial Court affirmed, holding that while the widespread use of ALPRs in the Commonwealth could implicate a defendant's constitutional protected expectation of privacy in the whole of his public movements, that interest was not invaded by the limited extent and use of the ALPR data in the instant case.