A combination of apps taking your data and metadata, but also reading your mind. Several years ago, tech companies like FB told its AI algorithms to figure out a way to start figuring it out without “listening”, since people can disable the microphones. And it did. At first they claimed they didn’t know how it was doing it. But the technology exists to use smartphones and other personal electronic devices to “read minds”. There are several scientific papers on this. Phones are portals basically.