Glendale police say data from a system used to identify areas with the most celebratory gunfire last New Year’s Eve is being used to decide where to send patrol officers this year.

A recent investigation by the Associated Press found a number of serious flaws with using the product to detect gunshots as evidence against a suspect.

Glendale has relied on the ShotSpotter system for about 20 years and is among dozens of cities that use it.

There are strategically placed acoustic sensors around the city that work off the principle of triangulation to detect gunshots.

Glendale police say they’re responding to all alerts from the ShotSpotter system during the holiday period, and they promise to arrest anyone caught celebrating by shooting a gun in public.

The AP, in August, published an unflattering review of ShotSpotter as part of an investigation into consequences of decisions driven by algorithms.

The report did not mention Glendale.