Important measure for loss control and preventing of shoplifting for retail businesses is professionally installed Theft Detector, or, Electronic Article Surveillance (EAS) systems. 
They detect unauthorized removal of stock items and generate audiable or silent alarm notification for security staff.
We alwasy advise our clients about the risks and adequate measures against actions of professional thiefs and criminals like attempts for jamming the Theft Detectors or disable the EAS tags.
For more details and discussing the relevant solutions, we would encourage to contact us without hesitation.