they are not really meant to catch shop lifters, they are meant to deter shoplifting. And to that extent, they likely work. Maybe not from "professionals", but

they are not really meant to catch shop lifters, they are meant to deter shoplifting. And to that extent, they likely work. Maybe not from "professionals", but from little smart ass tikes whom would otherwise think to be 'clever'. Source: I used to shoplift as a kid. Don't grab the shit with buzzers.