Fauxx is an open-source Android privacy tool that poisons data broker and ad-tech profiles by generating continuous, plausible, off-demographic synthetic activity from your device. The goal is simple: make your real behavioral signal statistically indistinguishable from noise.
Not my project, but though this is really cool and worth sharing.
Can’t check now, but one thing I’d worry about is it its data-poisoning has a pattern. If so, it shouldn’t be too hard for a program, specially from companies benefiting from the data, to identify and remove the noise.