TOKYO • The Tokyo Metropolitan Police Department has revealed a wristwatch-type device to be worn by so-called "running police" to be deployed at the Tokyo Marathon this Sunday.
The police department has dispatched the running police since 2015, as one of many measures to prevent a terror attack during the event.
Police officers who run the course with other participants will wear a small camera attached to their heads to help them detect potential attackers who might be amid the runners, the Washington Post reported.
The police's presence - and the cameras - will also act as a deterrent to would-be troublemakers.
The cameras can record a variety of footage, including areas along the marathon course, and the video is transmitted to the police department headquarters in real time.
The footage can also be seen on the monitor of the new device, allowing the officers to check whether they have filmed what they wanted to, according to the Post.