How much does Apple know about me?

Following Facebook's acknowledgement that it had let a political ad targeting firm scrape the personal data of 87 million users, I rushed to see what kind of personal data the social network and Google had gathered on me. Both had more information, reaching back longer, than I had envisioned. So Apple was next. I use an iPhone, iPad and two Mac computers, and Apple also offers data downloads in the privacy section of its website. It's hard to find, and once you do make the connection, you can expect a hefty wait to get the results.But don't expect to stay up all night reading what Apple has on you.Hint: it ain't much.