Fun with Sensormatic Theft Detection systems

You know those theft deterrent systems that some stores use? They are the white tags that in books, clothes and other merchandise that have to be removed or deactivated or the alarm goes off when you pass by the antennas mounted near the stores exit doors. My hearing aids and or Streamer trips the buzzer, going in or out. Most of the time I keep on walking unless some asks to check my bag. Sometimes I don't have a bag and all I get is puzzled looks and "never mind".