This way you can move about the terminal without becoming a victim for thieves. If you are driving and you get lost, DO NOT ask strangers on the street for directions. Go to a gas or police station and get proper directions. People have pulled to the side of a street and asked someone for directions only to be attacked, robbed, and shot by the person they asked for help from. A car alarm can be used as an aid to your family if need be.
Most car alarms have a panic button which sets off the alarm when pushed.
This will draw attention to your situation and attackers don't like that.