According to Jia Jia Li Safe understand, safe (English: safe deposit box, or called safety deposit box), is a security device, generally located in the vault, or internal bank or post office. Safe storage of no more than precious stones, precious metals, currency or important documents, such as wills, deeds of property. People to theft, fire, flood, anti-attack, or based on a variety of factors, rather than choose to place them in the home. According to a specific protocol, before using safe, the hirer is required to pay the bank fee, and safety deposit box is available only dedicated keys, master key bank-specific sign, or a password to open the inclusion of various nature. In addition, some banks use technology to enhance the security of human identification.

In the novels, the safe multi-volt line is used, especially horror fiction and detective novels. For example, in "The Da Vinci Code," "undercover" and "The Bourne Identity", some storyline involving safe handling.

   Safe can be divided into security safes, fireproof safe, moisture-proof safe, magnetic safes according to its primary function. Depending on the lock works can be divided into mechanical locks and electronic locks etc. Mechanical locks performance is relatively stable, but the tedious operation, suitable for company or business units. Easy to operate electronic locks, but the use of refractory period for personal use.

   According to Jia Jia Li safes noted, in order to defend the national security and integrity of the property, the units should be equipped with a dedicated safe, specifically for cash, keeping a variety of securities, bank notes, stamps and other treasury bills and the like. All units should strengthen the safe use and management, the development of safe use practices, requirements for personnel strictly enforced. In general, the safe use should pay attention to the following points:

    (1) safe management.

    Safe by the Chief Accountant or Finance General (Branch, shares) long authorized by the cashier is responsible for the management and use.

    (2) equipped with safe keys.

    Safe to be equipped with two keys, one kept by the cashier, the cashier for daily work use; another by the security department of the archive, or by the unit chief accountant or Finance (Branch, shares) is responsible for the custody order prepared under special circumstances approved by the leaders after opening them. Cashier safe keys can not be handed over to someone else for safekeeping.

    (3) to open the safe.

    Safes can only be opened for use by the cashier, the cashier can not open the safe non. If the unit chief accountant or Finance (Branch, shares) long teller needs to work checks, such as checking cash limits, check the actual amount of cash, or other special circumstances need to open the safe, the procedure should be required by the Chief Accountant or Finance (Branch, shares) long on, the charge shall be arbitrarily used by the cashier to open the safe in general.

    (4) property for safekeeping.

    After the end of the day, a blank check cashiers should be used (including cash checks and transfer checks), money receipts, the human equivalent safe seal. Safe memory should be set and put the cash register cash journal, the registration shall be inventoried species other securities, books, notes and other valuables should be kind of reference book is set to register its quality, weight, amount, etc., all their belongings should be books and records check match. As a rule, private property shall not be stored in the safe.

    (5) safe password.

    Cashier should keep themselves safe password strictly confidential and not disclose to others, to prevent the use of others. Cashier job mobility, the new treasurer should be replaced with a new password.

    (6) safe maintenance.

    Insurance placed in the corresponding hidden, dry place, attention to ventilation, moisture, moisture, insects and rodents; safe outside should always wipe clean, the property should be kept clean and safe sanitation, storage and tidy. Once the safe failure, the public security organs should go to the designated service point for repair to prevent leakage or theft.

    (7) safe handling stolen.

    According to Jia Jia Li Safe understand, cashier found safe after stolen should protect the scene and quickly report to public security organs (or the defense department), in order to clean up the property stolen during the crime scene until the public security organs. Holidays for two days or more, or at least leave the cashier did not send more than two days to work on their behalf, shall affix seal the keyhole in the safe place, work place when the cashier mortgage seal. If the seal is torn or found to be broken at the keyhole, and shall promptly report to the public security authorities or security departments to make timely public security organs or the defense department to identify cases, to prevent criminals further crime.