Computer System Checks School Guests Against "No-Fly" List

A Rio Grande Valley school district is among the latest to implement a program that allows them to immediately check visitors against databases of unwanted guests. In addition to sex offender registries, the schools can create custom lists of guests who are under restraining orders, etc.

According to the article, the system is costly at $32,000, but the software has stopped over 1,100 sex offenders at various locations just last year.