In a crowd of
67 million,
how many look
just like you?
“Anonymised” datasets are rarely anonymous. With few everyday details such as approximate location or demographics, our model trained on census data can pick a single person out of an entire country.
Take the quiz →<2 minutes
Population of the United Kingdom
67,330,000
A married man, born in 1974, living in the South East, in work.
about 62,000 people
Built by privacy researchers at Oxford, Imperial College London and UCLouvain, using data across 103 countries from IPUMS, the world's largest collection of national census. The underlying mathematical model was published in Nature Communications. Everything runs in your browser.