A Department of Homeland Security document reveals that Immigration and Customs Enforcement (ICE) uses a facial recognition app called Mobile Fortify to verify a person's identity and immigration status, and that individuals cannot refuse to be scanned. The app stores face photos for 15 years, regardless of immigration or citizenship status. This technology is used by ICE and Customs and Border Protection to scan people's faces in public areas. The document provides details on the technology and data storage behind Mobile Fortify.