let them track every pattern out there, and soon there would be tons and tons of data and no bits of information. Its information, and the speed at which the information can be retrieved from raw data, that is important. The larger the data store the less effective the information retrieval will be. So, it doesn't make any practical sense to store information indefinitely. Especially transient information. To make any use of such huge data, one has to first narrow the search. Which would mean that, unless they want to do something against you, they won't be looking for information on you. And if anybody in power wants to make an ordinary persons life miserable, I think they can always find a way. What matters here is that they can now track you LIVE with lot more efficiency and accuracy.