Sign. Through the introduction of the supermarket loss prevention post, the duty of the loss prevention staff is to abide by and maintain the rules and regulations of the supermarket, maintain the normal order of the supermarket and ensure the safety of people and property in the supermarket. In order to catch criminals, you need to sign and send them to the police station. So it was sealed by the supermarket and signed to prevent damage. The six functions of loss prevention personnel are risk management, quality assurance, loss management, internal investigation, asset protection and safety management.