The organizing committee for the 2020 Tokyo Olympics will install a state-of-the-art video surveillance system at venues and the athletes’ village during the games in a bid to improve the efficiency of its surveillance measures, several sources have said.

According to the sources, the surveillance system, provided by Olympic sponsor Panasonic Corp., combines infrared sensors and cameras. The organizers hope the new system will allow a high level of security despite having venues spread across the country.

Organizers are planning to install some 2,500 sets of sensors and 8,000 surveillance cameras at the Olympics, sources said Friday.

When sensors detect an irregularity, footage from a camera at that location will appear on monitors at the local security office as well as the main security center that will oversee the Games.

The total number of security cameras in 2020 will outstrip that of previous Games because of the number of venues. The organizers hope the sensors will reduce the workload and number of security personnel needed.

According to the sources, the organizers are also planning to equip some security guards with wearable cameras to monitor scenes in real time.

Regarding other preparations for the Games, meanwhile, the organizing committee expects to achieve its target for collecting the recycled metal needed to make the prize medals for the games by March.

Next year’s medals will be made in part from metal recycled from cellphones and small electronic devices. As of the end of October, the project had collected 93.7 percent of the gold and 85.4 percent of the silver required.

After the program’s launch in April 2017, the 2,700 kg needed to make the bronze medals was achieved by the end of June 2018. At that juncture, however, the project had collected just around half of the 30.3 kg of gold and 4,100 kg of silver needed. In response, the number of collection boxes for devices was increased.

“When we began, I felt anxiety about whether we would achieve 100 percent of our target,” Masaaki Komiya, a vice director-general with the organizing committee, said Friday. “I’m filled with gratitude.”

The organizers said they will announce the medal designs for the 2020 Games this summer.

The Tokyo Olympics are scheduled to be held between July 24 and Aug. 9, followed by the Paralympics from Aug. 25 to Sept. 6.