PHOENIX, Arizona (AP) -- Face-scanning technology designed to recognize registered sex offenders and missing children has been installed in a Phoenix school in a pilot project that some law enforcement and education officials hope to expand. Two cameras, which are expected to be operational next week, will scan faces of people who enter the office at Royal Palm Middle School. They are linked to state and national databases of sex offenders, missing children and alleged abductors. An officer will be dispatched to the school in the event of a possible match, said Maricopa County Sheriff Joe Arpaio. "If it works...