Commonwealth v. Arrington
Annotate this CaseThe case involves the Commonwealth's appeal against the trial judge's denial of its motion to admit expert testimony on Frequent Location History (FLH) data retrieved from the defendant's cell phone in a murder case. The Commonwealth argued that the FLH data would corroborate its witness's testimony, placing the defendant at the crime scene. The trial judge denied the motion, stating that the Commonwealth had not met its burden of showing that FLH data had been generally accepted as reliable by the scientific community. The judge also found that the Commonwealth had failed to provide evidence that FLH data has been subjected to peer review or publication, has an unacceptably high known or potential rate of error, and is governed by recognized standards. The Supreme Judicial Court for the county of Suffolk agreed with the trial judge's decision, concluding that the Commonwealth had not shown that FLH data is reliable. Therefore, the court affirmed the trial judge's denial of the Commonwealth's motion to admit the FLH data.
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