Privacy is hard

“Privacy is Hard, Volume 18283833.

Knowing of 5 downloaded, non-vendor specific apps installed on a device is enough to uniquely identify over 90% of individuals in a sample of a million+ people.”
Privacy researcher and Director of Open Privacy Sarah Jamie Lewis (@SarahJamieLewis), 17 September 2018. Jamie Lewis cites Temporal Limits of Privacy in Human Behavior by Sekara et al, 2018

Jamie Lewis continues, “This result is not surprising but it’s a nice illustration of the how even seemingly ‘useless’/‘unimportant’ information like ‘what apps do you have installed’ can impact total privacy.”