People who arrive at Narita Airport near Tokyo from abroad are now being checked for whether they have installed location tracing smartphone apps, to better cope with coronavirus variants.
All international arrivals, including Japanese nationals, are required to self-quarantine for 14 days and report their whereabouts and health condition once a day during that time.
On Tuesday, staff at the airport's quarantine station began asking all arrivals to show their smartphones to confirm whether they installed apps to report their locations and make video calls.
Those who arrive without a smartphone must rent one at their own expense. A counter has been set up for the procedure.
A Japanese woman who arrived from Cuba said it's uncomfortable to have her location checked and make video calls. But she said the measure is necessary for everyone to feel safe.