It is safe when you have metal detector because it can also sensor thieves or shoplifter who wish to bring clothes outside the store. Metal detectors are useful to find hidden metal objects and can detect not just nearby but even metal objects buried underground.
Metal detectors help the shop owners to avoid thieves and shoplifters. When an apparel has got a security tag, it is safe for the sellers because thieves cannot avoid the metal detector while exiting the store. The security tag has got a metal itself which cannot be pulled off easily.
