You know a security technology is
popular when Congress creates a grant program specific for its purchase and
when people in the street complain when it is not used.
Welcome to the
growing world of mass notification, technology and procedures often employed
during emergencies to get the word out to people who need to know about the
situation and what to do next. While the beginnings of mass notification seem
to have been phone trees and bullhorns, the most recent generation is smart,
electronic and carries messages over myriad means of communications.