British police roll out live facial recognition across London Underground stations

British transport police have begun using live facial recognition (LFR) technology at London Underground stations. The system checks faces of passing passengers in real time against databases of wanted criminals, enabling officers to detain suspects directly in the subway.

The deployment is already active at several stations, and according to law enforcement representatives, the technology has proven effective within the first days of operation. Cameras equipped with recognition algorithms scan faces in the crowd — this does not require passengers to stop or cooperate. As soon as the system finds a match with a person on the wanted list, a police unit is immediately dispatched to the scene.

Critics point to privacy risks: passengers using the subway have virtually no way to avoid being scanned. Human rights organizations have already expressed concern that mass collection of biometric data occurs without explicit consent from citizens and without an adequate legal framework. In response, the police emphasize that the system operates in strict compliance with legislation, and data is not retained longer than necessary for verification purposes.

This is not the first time LFR has been used in the UK: the technology was previously tested at mass events and in some public places, but the subway has become the largest venue for its use. According to expert estimates, if the pilot project is deemed successful, the system could be expanded to all underground stations, making London one of the most heavily monitored cities in Europe in terms of biometric control.