Regulates any person (including corporate affiliates) that collects, stores, or processes biometric data in Massachusetts, excluding government entities, law enforcement, and intelligence agencies. Imposes duties of loyalty, care, and confidentiality on covered entities regarding biometric data — prohibiting processing or transfer without consent, sale of biometric data, and discrimination against users who withhold consent. Prohibits use of biometric data for consequential decision-making and bans operation of biometric recognition technology in places open to the general public. Violations of Section 4 are declared per se violations of chapter 93A, enforceable by the attorney general. The bill contains no express private right of action, though the chapter 93A designation may enable private suits indirectly.