A private organization has conducted an experiment to detect malicious drones to prepare for next year's Olympic and Paralympic Games in Tokyo.
Firms that specialize in aeronautical engineering played a key role in Thursday's demonstration at a site in Minamisoma City, Fukushima Prefecture.
One of the key challenges for the organizers of international sports events is how to identify and intercept drones that are being operated by terrorists.
In the test, drones fitted with location transmitters were classified as friendly devices, while those that did not provide such data were regarded as suspicious.
Experts used the information to make on-the-spot assessments.
The private organization says Japan lags behind other countries in regulating drones.
It plans to compile a report on the test results by the end of next March and submit it to a public-private panel on drones.
University of Tokyo Professor Shinji Suzuki is the head of the Japan Unmanned System Traffic & Radio Management Consortium. Suzuki says Japan urgently needs to develop technology to instantly identify the operators of malicious drones.