They have already been tracking us. Mention anything, let’s use AC units for an example. Talk about air conditioning around your phone. Tell me if you don’t start seeing AC ads in side bars on your phone, Facebook, etc. Heck, my phone “knows” when I am getting in my vehicle to leave work. It prompts me the mileage and time to reach destination to my house. I thought that was weird and info I don’t really need, but there it is.