ENTRIES TAGGED "NYC Office of Policy and Strategic Planning"
Anonymized phone data isn't as anonymous as we thought, a CFPB API, and NYC's "geek squad of civic-minded number-crunchers."
Mobile phone mobility traces ID users with only four data points
A study published this week by Scientific Reports, Unique in the Crowd: The privacy bounds of human mobility, shows that the location data in mobile phones is posing an anonymity risk. Jason Palmer reported at the BBC that researchers at MIT and the Catholic University of Louvain reviewed data from 15 months’ worth of phone records for 1.5 million people and were able to identify “mobility traces,” or “evident paths of each mobile phone,” using only four locations and times to positively identify a particular user. Yves-Alexandre de Montjoye, the study’s lead author, told Palmer that “[t]he way we move and the behaviour is so unique that four points are enough to identify 95% of people.”