Browser fingerprinting is insanely sophisticated, and I am sure that apps have sophisticated techniques as well. When you pool the data together, it’s easy to c

Browser fingerprinting is insanely sophisticated, and I am sure that apps have sophisticated techniques as well. When you pool the data together, it’s easy to correlate. Plus, IMEI numbers can be used by carriers, and that is a very solid identifier per phone. When you operate at that level, tracking is very easy. ATT has been selling this data for years