Earlier quoted context omitted.
> So the idea that it takes a huge amount of computing resources, battery life, permissions, or bandwidth to do matching of keywords is hilarious. I also knew an entrepreneur who tried this same thing, but with TV shows. Fingerprinting specific audio is a different algorithm problem entirely. You only need to sample a short section of audio every few minutes and then process the spectral peaks, which are fingerprinte…
I agree it's a different algorithm, but not a higher powered one. You don't need to know context to get HELOC, Bariatric, or DUI. You also don't need 95%+ accuracy for 95% of the population. You're just doing advertising.
Regardless, this would require so much coordination, network traffic, and on-device code that could be reverse engineered that you’re implying that nobody has every found a hint of it existing and no employees of these companies have ever leaked any hints of it existing.
It’s very much in the domain of conspiracy theories.