Massachusetts SJC Holds That Postconviction Forensic Testing Under Chapter 278A Includes Cell Phone Digital Forensics

The Supreme Judicial Court confirms that Massachusetts postconviction forensic testing is not limited to DNA or biological evidence.

The Massachusetts Supreme Judicial Court recently issued an important decision for criminal appeals, postconviction litigation, forensic testing, and digital evidence. In Commonwealth v. Javaine Watson, the Court held that a person convicted of murder may seek postconviction digital forensic analysis of cell phones under G. L. c. 278A, the Massachusetts statute that provides access to forensic and scientific analysis after conviction.

The decision matters because the Commonwealth argued that Chapter 278A was limited to physical evidence capable of laboratory testing, especially evidence that could be tested for biological material such as DNA. The SJC rejected that narrow reading. The Court held that Chapter 278A is broader than DNA testing and permits forensic or scientific analysis of “evidence or biological material.” Because digital forensic analysis of a cell phone applies forensic techniques to evidence, it falls within the statute.

This is a significant ruling. It recognizes what criminal defense lawyers already know: in modern criminal cases, cell phones are often among the most important pieces of evidence. A phone can contain call logs, text messages, deleted data, GPS information, application data, photographs, contact information, encrypted content, and communications that may support innocence, undermine a key witness, or change the understanding of who participated in a crime.

The decision also reinforces the remedial purpose of Chapter 278A. The statute was designed to make postconviction forensic testing easier and faster than trying to obtain that testing only through a motion for new trial under Rule 30. The defendant does not have to prove that the testing will automatically win a new trial. He must show that the requested analysis has the potential to produce evidence material to identity.

That distinction is critical.

What happened in Commonwealth v. Watson?

The case arose from a 2013 homicide in Boston. The victim, Romeo McCubbin, was shot and killed while sitting in a car after attending an event at a nearby nightclub. Surveillance video captured parts of the shooting. The Commonwealth’s theory was that three codefendants were directly involved at the scene and that Javaine Watson was the driver of the getaway vehicle, a red Lincoln MKX.

The evidence against Watson included the Lincoln, which was found about an hour after the murder. The vehicle was unoccupied and still running. Inside the vehicle, police found keys to Watson’s own car and to the back door of his home. They also found a cell phone associated with Watson. Fingerprints connected Watson and his codefendants to different parts of the Lincoln, including fingerprints of Watson on the gearshift and driver’s side door handles.

The Commonwealth also relied heavily on cell phone evidence and the testimony of a key witness named Nadira Amoroso. Amoroso testified that she had been dating Watson at the time of the murder, that Watson had asked to borrow the Lincoln, that she had seen him at the nightclub near the scene, and that Watson later told her he abandoned the vehicle because he feared he was being followed.

But the defense theory was very different. The defense argued that Amoroso was not actually in a relationship with Watson, but with codefendant Andrew Robertson, and that she falsely implicated Watson to protect Robertson.

That theory turned on cell phone evidence.

One phone number ending in 8764 was registered to Robertson’s former girlfriend. Amoroso claimed that she used that number to contact Watson. But the defense argued that the 8764 number was actually connected to Robertson. Digital forensic evidence showed hundreds of contacts between Amoroso’s phone and the 8764 number, but only one contact between Amoroso’s phone and Watson’s known 6426 number in the month before the murder.

At trial, Amoroso denied knowing Robertson and said she could not identify him in the courtroom. The defense argued that this was false and that additional phone evidence could show her connection to Robertson.

Watson was convicted of murder in the first degree. The SJC affirmed the murder conviction on direct appeal in 2021, although it vacated a conviction for accessory after the fact.

The postconviction motion under Chapter 278A

After his direct appeal, Watson filed motions under G. L. c. 278A seeking forensic analysis of five cell phones seized from Robertson in unrelated investigations. Some of the phones had been seized approximately two months after the murder, and others had been seized approximately five months before the murder.

Watson argued that digital forensic analysis of Robertson’s phones could reveal communications between Robertson and Amoroso. If the phones showed that Amoroso and Robertson were communicating, that evidence would support Watson’s trial theory that Amoroso lied when she denied knowing Robertson and that she falsely implicated Watson to protect Robertson.

The motion judge allowed the Chapter 278A motions. The Commonwealth appealed, arguing that Chapter 278A did not permit this kind of digital forensic analysis.

The Commonwealth’s basic position was that the statute was about physical evidence and biological testing, not cell phone data. The SJC disagreed.

What is G. L. c. 278A?

General Laws c. 278A is Massachusetts’ postconviction forensic testing statute. It was enacted to create a separate process for forensic and scientific analysis after conviction. The results of that analysis may later support a motion for new trial, but the Chapter 278A motion is not itself a motion for new trial.

That distinction matters because Chapter 278A has a different and less demanding purpose. The statute is designed to give access to testing that may produce evidence. A defendant seeking testing does not have to prove at the testing stage that he is entitled to a new trial. He must satisfy the statutory requirements for access to forensic or scientific analysis.

The SJC described Chapter 278A as a remedial statute intended to address the injustice of wrongful convictions. The Court has repeatedly said that the statute should be construed generously to accomplish that purpose.

Although the statute was enacted against the backdrop of DNA testing and the recognition that DNA evidence can exonerate the wrongly convicted, the SJC emphasized that Chapter 278A is not limited to DNA. It permits forensic or scientific analysis of “evidence or biological material.” The words “or biological material” are important. If the Legislature meant to limit the statute to biological evidence, it would not have used the broader word “evidence.”

The SJC holds that digital forensic analysis is covered by Chapter 278A

The SJC held that digital forensic analysis of a cell phone can qualify as forensic or scientific analysis under Chapter 278A. The Court focused on the statutory definition of “analysis,” which means the process by which a forensic or scientific technique is applied to evidence or biological material to identify the perpetrator of a crime.

The Court then considered two questions.

First, does digital extraction of cell phone data involve a forensic or scientific technique?

Second, are cell phones and their contents “evidence” under the statute?

The answer to both questions was yes.

On the first question, the Commonwealth had already conceded in the lower court that digital forensic analysis is a type of forensic science and involves scientific expertise. The SJC agreed that digital extraction of cell phone data involves forensic or scientific techniques. The Court noted that a digital forensics expert testified that analyzing a cell phone is a multi-step process involving proper handling of the device, overcoming password protection, decrypting content, extracting data, preserving data, and using techniques that may access deleted content, call logs, text logs, GPS coordinates, application data, and encrypted information.

The Commonwealth relied on Commonwealth v. Cronin, where the SJC had held that a lay witness trained to use a digital extraction tool may testify about the steps he or she personally performed to generate an extraction report. But the SJC rejected the idea that Cronin meant digital extraction is not forensic science. Cronin distinguished between a person trained to operate a tool and an expert qualified to testify about the reliability and accuracy of the forensic techniques embedded in the tool. That distinction actually supported Watson, not the Commonwealth.

On the second question, the SJC held that cell phones and their digital contents are “evidence.” The Court used the ordinary meaning of the word evidence: something that tends to prove or disprove an alleged fact. Cell phone contents plainly fit that definition. Phones can contain call logs, text messages, location information, application data, photographs, and other information relevant to disputed facts in a criminal case.

The Court also pointed out that the Commonwealth itself frequently introduces cell phones and cell phone extraction reports as evidence in criminal trials, including in Watson’s own underlying case.

That made the Commonwealth’s narrow reading difficult to maintain. Cell phone data is evidence when the Commonwealth uses it. It is also evidence when a defendant seeks postconviction forensic testing that may support a claim of innocence or misidentification.

Why the Commonwealth’s narrow reading failed

The Commonwealth argued that Chapter 278A should be limited to tangible physical evidence capable of being handled, preserved, consumed, degraded, or destroyed during testing — and, at oral argument, it framed the statute even more narrowly as applying to physical evidence capable of being tested for biological material.

The SJC rejected that argument for several reasons.

First, the statute does not say that. It says “evidence or biological material.” The Court refused to add words that the Legislature did not include.

Second, reading “evidence” to mean only evidence containing biological material would make the phrase “biological material” largely redundant. If “evidence” already meant biological evidence, there would have been no reason for the Legislature to separately refer to biological material.

Third, Massachusetts case law had already applied Chapter 278A beyond DNA. The SJC cited cases involving ballistics, gunshot residue, fingerprints on shell casings, and other non-DNA forensic testing.

Fourth, Massachusetts enacted a broader postconviction testing statute than many other states. Some states limited their statutes to DNA testing. Massachusetts did not. The SJC treated that as meaningful.

The Court also rejected the Commonwealth’s concern that allowing digital forensic analysis would permit endless re-testing of cell phones every time technology improves. The Court explained that the statute already contains limits. A defendant seeking re-analysis using updated techniques must show a material improvement in the ability to identify or exclude the defendant as the perpetrator and must satisfy the other requirements of Chapter 278A.

In other words, the floodgates argument did not justify rewriting the statute.

Why the requested phone testing mattered to identity

The Commonwealth also argued that even if digital forensics is generally covered by Chapter 278A, Watson had not shown that the requested analysis had the potential to produce evidence material to identification.

The SJC disagreed.

The issue was not whether the requested testing would definitely prove Watson’s innocence. The issue was whether the testing had the potential to produce evidence material to Watson’s identification as the perpetrator.

That standard is intentionally lower than the standard for winning a new trial. The SJC emphasized that Chapter 278A is designed to give access to testing that might later support a motion for new trial. A defendant need not prove at the testing stage that the evidence will be enough to overturn the conviction.

Watson’s trial defense was that Amoroso lied to protect Robertson. Amoroso was a key witness for the Commonwealth. She supplied important testimony linking Watson to the planning of the murder and to the Lincoln. If digital analysis of Robertson’s phones revealed communications between Robertson and Amoroso, that could undermine her denial that she knew Robertson and cast doubt on her testimony as a whole.

The SJC held that this would not be “mere impeachment.” It could challenge the Commonwealth’s account of the sequence of events and the theory that Watson knowingly participated in the planned murder as the getaway driver.

That was enough.

The SJC rejects the idea that other evidence of guilt defeats Chapter 278A access

The Commonwealth argued that other evidence still implicated Watson, including his fingerprints and personal belongings in the Lincoln and call logs showing contacts with codefendants.

The SJC acknowledged that such evidence might create a challenge if Watson later files a motion for new trial. But that is a different question. Chapter 278A does not require the defendant to prove that the requested testing will overcome all the evidence of guilt. It requires a showing that the requested analysis has the potential to produce evidence material to identity.

This is one of the most important parts of the decision.

Postconviction forensic testing is not limited to cases where the defendant can already prove he would win a new trial. That would defeat the purpose of the statute. The point of testing is to find out what the evidence shows. The defendant may later fail to obtain a new trial. But he can still be entitled to testing if the statutory requirements are met.

The SJC affirmed the motion judge’s order allowing forensic analysis of the five cell phones.

Why this decision matters for Massachusetts criminal defense

Commonwealth v. Watson is a major decision for postconviction lawyers, criminal defense attorneys, and anyone litigating digital evidence in Massachusetts.

First, it confirms that Chapter 278A is not a DNA-only statute. The statute reaches forensic or scientific analysis of evidence, including digital evidence.

Second, it recognizes that cell phones are not just containers for information. They are often central evidence in criminal cases. They may contain information about who communicated with whom, where people were, what they planned, what they deleted, and what relationships existed between key witnesses.

Third, it prevents the Commonwealth from taking inconsistent positions about digital evidence. Prosecutors routinely use cell phone extractions, call logs, text messages, location data, photographs, and app data as evidence at trial. After conviction, defendants must also be able to seek forensic analysis of digital evidence when that analysis may be material to identity.

Fourth, the decision reinforces that Chapter 278A has a remedial purpose. It is meant to make forensic testing accessible where testing could help determine whether the right person was convicted.

Digital forensics and wrongful convictions

This case also reflects a broader reality: wrongful conviction litigation is no longer only about DNA.

DNA remains enormously important. But modern criminal cases often turn on digital evidence. Cell phones, cloud data, social media accounts, GPS records, surveillance systems, license plate readers, infotainment systems, and messaging applications can all contain evidence that changes the meaning of a case.

A witness may claim not to know someone. Phone data may prove otherwise.

A witness may claim a defendant was present at a meeting. Location data may contradict that.

The Commonwealth may claim a defendant was coordinating with others. Message data may show a different pattern.

A key accusation may depend on who had possession of a phone. Device data may reveal user activity, account information, application use, or deleted content.

In that world, a postconviction testing statute that excluded digital forensics would be badly out of step with modern criminal litigation. The SJC’s decision keeps Chapter 278A connected to the realities of contemporary evidence.

The relationship between Chapter 278A and Rule 30 motions for new trial

The decision also clarifies the relationship between Chapter 278A and Rule 30.

A motion under Chapter 278A seeks forensic or scientific analysis. A motion under Rule 30 seeks postconviction relief, such as a new trial.

Those are different procedural steps.

If forensic testing produces helpful evidence, the defendant may later file a Rule 30 motion. At that stage, the defendant will have to satisfy the standards for a new trial. But at the Chapter 278A stage, the defendant does not have to prove that the results will require a new trial. He needs to show that the requested analysis meets the statutory requirements, including that it has the potential to produce evidence material to identification.

This is crucial. The Commonwealth often argues that a defendant should not get testing because the trial evidence was strong or because the new evidence might not ultimately change the result. Watson reminds courts that those arguments may be premature. The statute is about access to testing, not the final new-trial determination.

What should defense lawyers take from Watson?

Defense lawyers should think broadly about Chapter 278A. The statute may apply to more than traditional DNA testing.

Potential categories of postconviction forensic analysis may include digital forensic analysis of cell phones, analysis of deleted data, extraction of application data, GPS or location data review, forensic testing of firearms evidence, fingerprint testing, gunshot residue testing, and other scientific or forensic techniques applied to evidence.

For a strong Chapter 278A motion, the defense should identify:

The evidence to be analyzed.

The forensic or scientific technique to be applied.

Why the evidence was not previously analyzed.

Why a reasonably effective attorney would have sought the analysis.

How the requested testing has the potential to produce evidence material to identity.

How the results could support the defense theory or challenge the Commonwealth’s account of events.

The defense does not have to prove the testing will produce favorable results. But the motion must explain why the testing could matter.

In Watson, the theory was concrete. The defense identified specific phones belonging to Robertson, a key witness whose credibility was central, a disputed relationship between Amoroso and Robertson, known communications involving the 8764 number, and a plausible way the requested analysis could reveal communications that would support Watson’s defense.

That is the model: connect the requested forensic analysis to identity and to the trial theory.

What should prosecutors and judges take from Watson?

For prosecutors, the lesson is that Chapter 278A cannot be artificially narrowed to DNA or biological evidence. If the defendant seeks forensic analysis of digital evidence and satisfies the statutory requirements, the motion may be allowed.

For judges, the decision reinforces that Chapter 278A should be interpreted broadly and remedially. Courts should not collapse Chapter 278A into Rule 30. A defendant seeking testing does not have to prove in advance that he will win a new trial. The question is whether the requested analysis has the potential to produce material evidence.

The SJC also made clear that digital evidence fits comfortably within ordinary concepts of evidence. A cell phone is a physical object. Its contents may be preserved, extracted, analyzed, and used to prove or disprove facts. The fact that the relevant evidence is digital does not remove it from the statute.

Question and Answer

What did the SJC hold in Commonwealth v. Watson?

The SJC held that digital forensic analysis of cell phones can be obtained under G. L. c. 278A, Massachusetts’ postconviction forensic testing statute. The Court affirmed the order allowing Watson to obtain forensic analysis of five cell phones associated with a codefendant.

Is Chapter 278A limited to DNA testing?

No. Although the statute was enacted in the context of DNA exoneration cases, it is not limited to DNA or biological material. The statute permits forensic or scientific analysis of “evidence or biological material.”

Can cell phones count as evidence under Chapter 278A?

Yes. The SJC held that cell phones and their digital contents, including call logs, text messages, location information, application data, and other records, fall comfortably within the meaning of evidence.

Why did Watson want the codefendant’s phones analyzed?

Watson argued that the phones could reveal communications between codefendant Andrew Robertson and key Commonwealth witness Nadira Amoroso. That evidence could support Watson’s theory that Amoroso lied when she denied knowing Robertson and falsely implicated Watson to protect Robertson.

Did Watson have to prove that the testing would win him a new trial?

No. At the Chapter 278A stage, Watson had to show that the requested analysis had the potential to produce evidence material to identity. If testing produces helpful evidence, he would still have to meet the Rule 30 standard to obtain a new trial.

What does “material to identification” mean under Chapter 278A?

Evidence is material to identification if it is significant to whether the defendant was the perpetrator. It can include evidence that supports the defense theory, challenges the Commonwealth’s sequence of events, or undermines key testimony linking the defendant to the crime.

Why is this decision important?

The decision is important because it brings Massachusetts postconviction forensic testing law into the digital age. It recognizes that modern criminal cases often turn on cell phone evidence and that defendants must have access to forensic analysis of digital evidence when the statutory requirements are met.

Conclusion: Postconviction testing in Massachusetts includes modern digital evidence

Commonwealth v. Watson is an important decision for Massachusetts criminal appeals and postconviction litigation. The SJC rejected a narrow reading of Chapter 278A and held that digital forensic analysis of cell phones can be available after conviction.

That ruling matters because criminal cases today often depend on digital evidence. Phones may contain communications, location information, deleted data, app records, photographs, and other evidence that can confirm or undermine the Commonwealth’s theory. If the prosecution can use digital forensic evidence to convict, defendants must also have meaningful access to digital forensic testing when it may show that the wrong person was convicted or that a key witness gave false testimony.

The decision also reinforces a broader point about postconviction litigation. A defendant seeking forensic testing does not have to prove the result before the testing occurs. Chapter 278A exists because testing may uncover evidence that was not available, not pursued, or not understood at trial. The statute is designed to provide access to that analysis when it has the potential to matter.

For anyone convicted of a serious crime in Massachusetts, especially a homicide or other case involving cell phones, text messages, call logs, GPS data, social media, or digital communications, Watson is a case worth understanding. It may open the door to postconviction forensic testing that can support a motion for new trial.

The lawyers at Benzaken, Sheehan & Wood, LLP represent clients in serious criminal cases, appeals, motions for new trial, and postconviction matters throughout Massachusetts. If you or a loved one has been convicted and there is untested forensic evidence, digital evidence, cell phone data, or other material that may bear on identity or innocence, contact us to discuss whether Chapter 278A or a Rule 30 motion may provide a path forward.