Advertisement American Airlines is rolling out tech that calls out passengers who try to board before their turn.Travelers can expect to see it in action at more than 100 airports this holiday season.The new tech also gives staff more info on passengers' connections and boarding groups.American Airlines is cracking down on passengers who try to sneak their way into an earlier boarding group.The airline is introducing new technology that helps gate agents catch overeager boarders at more than 100 airports a ...