We’re all being photographed, a lot — by each other, and by cameras in public and private spaces.  As our images become more widespread, there’s also more facial recognition technology that’s used to identify us. This week, a federal judge said Facebook must face a lawsuit over its use of facial recognition. Marketplace Tech host Molly Wood talks with Joseph Lorenzo Hall, chief technologist at the Center for Democracy and Technology about the value in this kind of technology, along with what kind of harm it can cause.