When ever I go into Barns & Nobles, Ulta Salons or any Walgreens, I set off their detectors. On the way in and the way out. I have experimented with have absolutely no metal on me and just wearing sweats and sandals - no metal. I don't have any glasses, no watch, no keys, no wallet, no pacemaker, no static in my hair, only a few very old fillings in my teeth, no pins in bones, nothing that I can think of. Even with my keys and phone and regular jeans and tennis shoes I never set off any other stores' alarms - just these three, everytime, no matter what I'm carrying or not carrying.