I read this story many years ago where researchers were able to re-identify people using open travel datasets. https://www.unimelb.edu.au/newsroom/news/2019/au

I read this story many years ago where researchers were able to re-identify people using open travel datasets. https://www.unimelb.edu.au/newsroom/news/2019/august/myki-privacy-de-railed-travellers-movements-and-identities-at-risk-by-public-release-of-anonymised-data https://www.unimelb.edu.au/newsroom/news/2019/august/myki-pr...