If at this point in the film you still believe that Google is just a mere internet search engine, you are very wrong. "In the network, when something is free, the product is you." This is the maximum that will not tire of repeating the computer security experts. Therefore, Gmail, Youtube, Google Maps ... are "free" services. While it is true that the user does not pay money to use, it does give something in return: your privacy, public ABC.
With any user activity performed on the Internet, Google can know what your tastes are, what they plan to do next trips or is passionate about sport. And all know that tracks the activity of anyone using your browser or use any of its services. In fact, in the terms of use and conditions it indicates that the information collected by the company will be used for different purposes, such as advertising. It is no coincidence that when you are reading your favorite newspaper, an advertising banner of shoes that you consulted very recently on another web page appears.
If you have a Gmail account, you can see the tracking that Google makes about you in "Activity on the Web and Applications". This is where Google stores all past searches and content which have browsed in Chrome and other applications either in the last week, last month or forever
However, the user has nothing to fear. You can delete all history because no services will be affected by it.
The "Location History" is another option that reflect Google know exactly how each of our movements. On the map, the user can see reflected what the points are visiting or have visited. If you usually spend the summer in an area, go skiing, visit family in the village or walk the dog in the home park, Google knows it, and you make the exact route to the final destination.