- Google will send you a router to intercept your entire household's internet traffic on all devices with a browser (https://support.google.com/audiencemeasurement/answer/757439...)
- Google will send you a device that listens 24/7 to audio in the room to figure out what you are watching on TV and listening to (https://support.google.com/audiencemeasurement/answer/757476...)
- Google's project includes tracking of desktop and laptop internet activity via a browser extension that can basically read literally anything you do online (https://support.google.com/audiencemeasurement/answer/757448...)
This isn't just trying to figure out what new up-and-coming apps are going to be the next big thing, this is Google building out very far-reaching profiles of your entire household, in return for some gift cards. This is signing away your family's entire digital life (and a significant part of anyone they interact with in a browser).