Police across the United States are increasingly relying on emerging technologies to make their jobs more efficient. In their daily work, they are using drones, license plate readers, body cameras and gunshot detection systems to reduce injury and bodily harm. The move comes as some law enforcement agencies are struggling with retention and hiring during the pandemic, when hundreds of cops in cities including Los Angeles and New York were sidelined because of the spread of the coronavirus. As police departments determine which technologies to adopt, they are also grappling with growing concerns about privacy that these technologies bring and potential complications they could create for officers on the job.