The only problem ShotSpotter solves is not enough public money into private hands. What information does it actually give the police, even assuming that it is 100% accurate?
At a certain time and place a gun was fired. Great? Who cares. That isn’t worth $1million/mo.
If there are 3 people in the general location and time that a gun was fired, what has shotspotter done to help?

Fortunately Chicago is getting rid of this finally. https://chicago.suntimes.com/city-hall/2024/02/22/shotspotter-contract-cost-mayor-brandon-johnson-cancel-extension-summer