Facial Recognition Technology Solves Crimes, but at What Cost?

Even as big tech companies such as Amazon limit their sale of facial recognition software to law enforcement, one company has not: Clearview AI, a facial recognition search engine that contains three billion images scraped from the internet.    

More than 3,000 U.S. law enforcement agencies employ the software, which uses an advanced algorithm to identify and match faces, the company says.    “The way it works is very similar to Google, but instead of putting in words, you're putting in photos of faces, and it will find anything publicly available on the internet that looks like that face,” said Hoan Ton-That, chief executive and co-founder of the company.    Police argue that facial recognition software is an important tool in fighting and solving crimes. But its increasing use has raised concerns that there are too few rules in place for when and how police can use it.