Thanks for your suggestions. If anybody else has additional references to suggest, please tell.
I’ve been worried for years, about how companies are tracking us. But it was not until last year, when my iPhone shamelessly displayed a notice telling me where I had parked my car, that I realized the privacy issue has changed from worrying to a serious risk. A big number of companies have taken the user-tracking way. It’s shocking how TomTom has changed for example: nowadays you don’t have total control about your device contents, and, the default setting is to send them your GPS history (yes, they “anonimize” it, blah, blah, but they make money from your private data). You can disable it, but they try that you don’t disable it (and, at some point I guess it won’t be possible to disable it anymore).
So, thanks a lot for the references. If anybody knows more (mainly focused in protecting your privacy against commercial brands and marketing companies), please tell. I’m not interested in privacy protection against the government, though, only against companies tracking.