When Cambridge announced it was halting the use of automatic license-plate reader technology pending review of data-sharing practices, the decision reflected more than a policy debate. It exposed an emerging evidentiary fault line under Article 14 of the Massachusetts Declaration of Rights. At the same time, Brookline’s consideration of privately owned plate readers with police access demonstrates how quickly surveillance systems can expand beyond traditional public control. Together, these developments offer meaningful insight for defense counsel assessing whether the Commonwealth relied on warrantless, technology-driven tracking to build its case.
When prosecutors present evidence drawn from automated plate readers, defense strategy should center on three questions: how long the data was stored, whether it was shared with outside entities, and whether law enforcement used cumulative scans to reconstruct a person’s movements across time. Each of these factors directly influences whether the collection qualifies as a “search” under Article 14.
Boston Criminal Defense Lawyer Blog

