I found this on Bruce Schneier’s blog:
I covered the story of the Beijing 2022 Olympics and the privacy issues raised for those attending, and the advice that burner phones would be a good idea because of China’s internet and privacy policies:
Privacy in China and the Winter Olympics – Smart Thinking Solutions
Burner phones! – Smart Thinking Solutions
Now there is concern that there are privacy concerns around the FIFA World Cup Qatar 2022:
“Everyone travelling to Qatar during the football World Cup will be asked to download two apps called Ehteraz and Hayya.”
… personally I would never bring my mobile phone on a visit to Qatar.
Øyvind Vasaasen – Head of Security at NRK
Further Reading
Beijing 2022 Olympic and Paralympic Winter games – Smart Thinking Solutions