Yup. Think about how you can recognize your friends without even seeing their face, by the way they walk, what they wear, how tall they are, and other contextual clues. Computers will be able to do all of that. Also think about other things that only computers with massive amounts of data will be able to do. Computers will be able to enumerate your wardrobe, your possessions. They'll be able to figure out most of the books you've read or own. They'll know where you work, what your schedule is, where you shop, what you do for fun, when you take vacations and where. They'll be able to learn all of this even if you don't freely give all this information up through social media posts and what-have-you by following you in the background of other stuff or through other "feeds". Imagine how much easier it is to identify someone in a picture or a video if you can pull in "big data" context which narrows down the possible/likely people who could be in that location at that time (wearing those clothes, doing that activity, within a given weight/height range, etc, etc, etc.)

We don't really know what the feasible computational and data limits are here, the potential (and likelihood, I think) is that they are much, much lower than where we would like them to be. In the near future something very close to ubiquitous surveillance is very likely to be the norm. And that has all sorts of chilling implications. If systems can keep track of where you are and what you're doing most hours of most days then that opens up a lot of questions in terms of free expression, political organizing, civil disobedience, etc.