Comment by nerdponx

> This data is sold to whoever wants it. Hedge funds or services who analyze it for hedge funds is the big one. It's normal to track hundreds of millions of people a day and trade stocks based on where they go. This isn't fantasy, it's what happens every day.

Honestly, this is the least bothersome part of the whole thing. The only problem is that there's no way I trust anyone involved to properly anonymize and secure the data in question.