A police oversight group has formally recommended Portland adopt a technology known as "ShotSpotter" to help tackle gun violence, but the technology has been met with some skepticism. ShotSpotter uses artificial intelligence with data collected from hidden microphones to determine the location of gunshots and inform the police department. Dan Hon, a Portland-based strategy consultant in government and civic technology, said the technology still has to make some leaps to determine if the sound it hears is a gunshot. ...