Can Hair/Beauty Products Set Off Sensors? those ones at the door?

Okay before you get suspicious of you asking me this I can explain lol! Well my big sister is always showing


up at home from drugstores like CVS, Rite-Aid %26amp; Walgreens with new hair, beauty and cosmetics products that


I KNOW for a fact that she didn't buy because she has no job and has no way of getting a hold of any money


plus everytime she comes home she has no bags or recepit so it's pretty obvious that she's shoplifting the


items and I'm wondering like HOW is she getting away with it? Don't they have sensors or something that will


go off when she tries to walk out the door? What about that barcode thing?Can Hair/Beauty Products Set Off Sensors? those ones at the door?
3 things that i saw on tvee


1. she could pill off the barcode if its a sticker on scratch it off


2. she could stick it in areas ( underwear// bar etc )


3. when it beeps she could run like hell