The bill amends Chapter 6 of the General Laws to regulate the use of biometric surveillance technology, specifically facial recognition, by law enforcement agencies. It establishes definitions for key terms such as "biometric surveillance technology," "facial recognition," and "public agency." The bill prohibits law enforcement agencies from acquiring, possessing, or using biometric surveillance technology without express authorization, and it outlines specific circumstances under which the Department of State Police may perform facial recognition searches. These include assisting the registrar of motor vehicles in identity verification, executing warrants, responding to emergencies, and identifying deceased individuals.

Additionally, the bill mandates transparency and accountability measures, requiring law enforcement agencies to document and report facial recognition search requests and results, including demographic data of individuals involved. It also prohibits the use of biometric surveillance systems to infer emotions or analyze moving images, while allowing limited use of personal devices for user authentication. The bill emphasizes the importance of public oversight by requiring annual reports on facial recognition searches and their outcomes, ensuring that the use of such technology is closely monitored and regulated.