https://www.techdirt.com/articles/20200127/20405043812/lawsuit-says-clearviews-facial-recognition-app-violates-illinois-privacy-laws.shtml

Clearview has gathered a whole lot of (negative) attention ever since its exposure by Kashmir Hill for the New York Times. The facial recognition app developed by Hoan Ton-That (whose previous app was a novelty that allowed users to transpose President Trump's distinctive hairdo on their own heads) relies on scraped photos to perform its questionable magic. Rather than limiting themselves to law enforcement databases, cops can upload a photo and search a face against pictures taken from dozens of websites.

The company's marketing materials claim cops have access to 3 billion face photos via Clearview -- all pulled from public accounts linked to names, addresses, and any other personal info millions of unwitting social media users have uploaded to the internet.