Big tech companies first started working on artificial facial recognition more than a decade ago. But they chose not to release it, worried about who might use it and how. Then, in 2017, the small startup Clearview AI debuted its facial-recognition app and began marketing its tool to law-enforcement agencies. This week on Apple News In Conversation, host Shumita Basu talks to Kashmir Hill, a New York Times tech reporter and author of the new book Your Face Belongs to Us, about what this technology is capable of, what guardrails exist, and what the future of privacy might look like.