The Tokyo 2020 Organising Committee's plan to use GPS as a measure to prevent the spread of COVID-19 is not intended to monitor the real-time whereabouts of people from overseas, but to trace and confirm their movements retroactively in the event infections are confirmed, its CEO said Wednesday.

Toshiro Muto told reporters that everyone entering Japan from abroad, including athletes, officials and members of the media, will be required to submit plans for their first 14 days in the country and turn on the GPS function on their smartphones.

"We're not going to be tracking every single movement," he told a news conference. "I want to trust they will follow the rules first."