Google learns a great deal about a user’s personal interests during even a single day of typical internet usage. That is informacion capital.
Full report downdoad-> here
In an example “day in the life” scenario, where a real user with a new Google account and an Android phone (with new SIM card) goes through her daily routine,Google collected data at numerous activity touchpoints, such as user location, routes taken, items purchased, and music listened to. Surprisingly, Google collected or inferred over two-thirds of the information through passive means. At the end of the day, Google identified user interests with remarkable accuracy.
Google collects user data in a variety of ways. The most obvious are “active,” with the user directly and consciously communicating information to Google, as for example by signing in to any of its widely used applications such as YouTube, Gmail, Search etc.
Less obvious ways for Google to collect data are “passive” means, whereby an application is instrumented to gather information while it’s running, possibly without the user’s knowledge.
Google’s passive data gathering methods arise from platforms (e.g. Android and Chrome), applications (e.g. Search, YouTube, Maps), publisher tools (e.g. Google Analytics, AdSense) and advertiser tools (e.g. AdMob, AdWords). The extent and magnitude of Google’s passive data collection has largely been overlooked by past studies on this topic.
Full report download -> here