In this Aug. 10, 2021, file photo, ShotSpotter equipment overlooks the intersection of South Stony Island Avenue and East 63rd Street in Chicago. Critics decry the multimillion-dollar system not only in terms of its expense and inaccuracy, but for what they say is a pattern of bias in deploying police resources disproportionately into minority communities. (AP Photo/Charles Rex Arbogast, File) **FILE**