
Washington Post technology columnist Geoffrey Fowler says smartphones and apps are harvesting our personal data — and that of our kids — on a scale that would shock most users. By the time a child is 13, he writes, online advertising firms have collected an average of 72 million data points about that individual.
"Companies out there that you would never know the name of, that really have no relationship with the app that you were trying to use, could be, first of all, tracking your kid's interests, then trying to predict what they might want to buy, or sell their information on to others," Fowler says.