Sounds like @Doctorow is a fan of !SelfHosting: Imagine a location service that sold itself on the fact that your personal information was securely contained in its environs, used by you and you alone. You could have devices on your person that used their sensors to know things about you – when you last ate, what your dining preferences are, what your blood-sugar is, and so on, but these devices would have no truck with the cloud, and they would not deliver that information to anyone else for analysis. Instead, as you passed through space, stores, toilets, restaurants, grocers and other entities would emit information about their offerings. These would be seen and analyzed by your personal network, and it would decide, on your behalf, whether to tell you about them, based on the preferences you’ve set, or that it’s learned from you. The fact that you’ve been shown some piece of information would be between you and the computers you own, and – again – shared with no one. http://www.locusmag.com/Perspectives/2015/09/cory-doctorow-what-if-people-were-sensors-not-things-to-be-sensed/