Shotspotter Inc. /zigman2/quotes/203800377/composite SSTI -2.19% said late Wednesday that it will partner with Verizon Communications Inc. /zigman2/quotes/204980236/composite VZ -0.13% to expand its gunshot-detection network by using a Verizon internet-of-things platform set up on street lights. Shotspotter stock is up 8.5% to $17.50 and Verizon stock is flat after hours. Now attached to Verizon's Light Sensory Network, Shotspotter will be able to cover larger areas in cities with its tech, which uses acoustic sensors and software to detect and pinpoint gunshots in "near real time." The acoustic and other data the tech collects is then sent to emergency dispatchers and law enforcement, which can respond more quickly to potential safety concerns, Shotspotter said. Shotspotter went public in 2017 at $11 and the stock is up 28% in the past six months, as the S&P 500 index /zigman2/quotes/210599714/realtime SPX +1.01% has gained 15%.