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Emergency message boards have by now successfully end up being mainstream in culture and also acquainted to lots of people. Message boards introducing emergency situation Amber notifies are perhaps the most commonplace (though such notifications now reach even more individuals via the brief usurpation of their mobile phones), however various other usages additionally abound. These media appear over freeways to warn of hold-ups or accidents, in sports arena, in front of churches, as well as at entries to high schools, updating their messages in real time.