Regulates the collection, processing, and use of biometric data and biometric recognition technology in Massachusetts. Covered entities — any person that collects, stores, or processes biometric data, excluding government entities — owe duties of loyalty, care, and confidentiality to end users, including prohibitions on processing without consent, selling biometric data, and engaging in deceptive, unfair, or abusive data practices. The bill categorically prohibits using biometric data in decisions producing legal or similarly significant effects (employment, housing, credit, healthcare, etc.) and prohibits operating biometric recognition technology in any place open to the general public. Enforcement is through the attorney general under Massachusetts chapter 93A; violations of the decision-making and surveillance restrictions are declared per se unfair or deceptive acts. The bill does not create an explicit private right of action, though the 93A framework may provide indirect private enforcement.