Essex Police have announced LFR vans will be in the town on Sunday. Crime - a Live Facial Recognition van (Image: Essex Police)An Essex Police spokesperson said: "We've made more than 170 arrests using this technology including in connection with investigations into violent and sexual offences. The technology works by matching images taken by cameras with a watch-list of people wanted by either the police or the courts. If a person is not on the watch-list, their image is deleted within a fraction of a second. Essex Police have been deploying LFR technology since summer 2024, following successful trials in 2023.