The company operating Narita Airport near Tokyo has unveiled a robot that will be used for security patrols in the terminal buildings.
The airport operator decided to use the robots to step up security given the expected increase in visitors for the 2020 Olympics and Paralympics.
The robots will go into operation on June 3. On Wednesday, the media got a demonstration of how the machines will operate.
The 1.20-meter-high wheeled robot is fitted with a 360-degree surveillance camera, sensors to detect obstacles and other equipment including a metal detector.
The robot can avoid obstacles and follow a programmed patrol route inside the terminals.
In the demonstration, the machine checked a trash bin using its extending arm. As soon as it detected heat coming from a pocket warmer in the garbage, it transmitted a message to the central monitoring room.
Narita airport officials say it is the first time that such a security robot will be used at a Japanese airport.
Some train stations and commercial premises in Japan already use robots, to compensate for a shortage of security workers in recent years.