The Justice Department sued TikTok, alleging the app allows kids to make accounts and then amasses data on them. But TikTok is just one of many apps and websites that constantly observe, identify and track users.

A guide to breakdancing’s Olympic debut

Post Reports is the daily podcast from The Washington Post. Unparalleled reporting. Expert insight. Clear analysis. Everything you’ve come to expect from the newsroom of The Post, for your ears. Martine Powers and Elahe Izadi are your hosts, asking the questions you didn’t know you wanted answered. Published weekdays around 5 p.m. Eastern time.