Store security

This past weekends shopping was an interesting experience. As we were waking around I'd ask what this noise was and that noise. I came upon one particular noise that I heard but curiously Lily didn't. I waited and waited... didn't hear it again so I gave it up. Then all of a sudden it hit me as I was walking into a store. My CI was picking up the store detectors/sensor.   I hear them 5 feet before and about 5 feet after.  If you see me running in and out of those kinds of stores you will know why!!  Crazy!!!!