Commonwealth v. Johnson

**830We are called upon to interpret the standing requirement of G. L. c. 278A (chapter 278A). That statute "allows those who have been convicted but assert factual innocence to have access to forensic and scientific testing of evidence and biological **831material that has the potential to prove their innocence." Commonwealth v. Williams, 481 Mass. 799, 799, 119 N.E.3d 1171 (2019). "A person may file a motion for forensic or scientific analysis under" chapter 278A if that person is, among other requirements, "incarcerated in a state prison [or] house of correction, is on parole or…