A look at ShotSpotter, which uses sensors to "detect gunshots", as court filings suggest it frequently alters evidence at the request of police departments (Todd Feathers/VICE)

Todd Feathers / VICE:A look at ShotSpotter, which uses sensors to “detect gunshots”, as court filings suggest it frequently alters evidence at the request of police departments  —  Prosecutors in Chicago are being forced to withdraw evidence generated by the technology, which led to the police killing …

A look at ShotSpotter, which uses sensors to "detect gunshots", as court filings suggest it frequently alters evidence at the request of police departments (Todd Feathers/VICE)

Todd Feathers / VICE:
A look at ShotSpotter, which uses sensors to “detect gunshots”, as court filings suggest it frequently alters evidence at the request of police departments  —  Prosecutors in Chicago are being forced to withdraw evidence generated by the technology, which led to the police killing …