London (CNN) A theater in London's West End has introduced mini body cameras for staff, in a bid to discourage rowdy audience behavior.

The industry groups Society of London Theatre and UK Theatre have teamed up with security company Calla to prevent aggression against staff, according to Phill Brown, head of risk and safety at the Society of London Theatre and UK Theatre.

Brown told CNN that a West End venue is conducting a three-month trial of the body cameras after anecdotal evidence emerged of an increasing number of incidents involving aggression against theater staff.

Staff involved in the trial have reported that they feel more confident in dealing with unruly members of the public when wearing the camera, according to Brown. "The tool definitely helped calm the situation," he said.

Phill Brown, head of risk and safety at the Society of London Theatre and UK Theatre, wears a body camera.

The cameras have a screen on one side that displays the image being recorded, much like the cameras used at some self-service grocery store checkouts. This means people can see themselves as if through the camera lens, which is effective in calming them down, according to Ben Read, marketing manager at Calla.

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