In real life, methods of cracking safes or safes usually require professional skills and tools, and must be carried out under the premise of legal authorization (such as police investigations or emergency unlocking services). The following are common legal technical methods and their principles： --- ### **1. Mechanical password lock cracking method** -**Monitoring method (traditional lock)** Suitable for old-fashioned mechanical turntable locks. The operator determines the position of the password by slowly turning the password disk and monitoring the subtle sounds of the internal mechanical structure (such as the sound of gear buckling) or tactile feedback (resistance changes). A professional locksmith may use a stethoscope to assist. -**Physical derivation (try combination)** If the safe uses a simple password (such as 3 duplicate digits), an attacker may try common combinations (such as 000, 123, birthday, etc.). But modern safes usually have an anti-cracking mechanism, and multiple wrong attempts will trigger a lock or alarm. --- ### **2. Electronic password lock cracking method** -**Exploit** Some low-end electronic locks have design defects (such as unmodified default passwords, backdoor passwords, or program vulnerabilities), and professional technicians may find a way to bypass them through manufacturer manuals or reverse engineering. -**Power interference (only for specific models)** Very few electronic locks may release electromagnetic signals at the moment of power failure, and the password can be inferred by capturing the signal through professional equipment (such as an oscilloscope). But most high-end safes encrypt data and prevent interference. --- ### **3. Physical destruction method** -**Drilling attack** Drill holes in the weak spots of the mechanical lock (such as the periphery of the latch), and manually unlock it after destroying the internal structure. It is necessary to accurately grasp the internal structure of the safe, and it will leave obvious traces. -**Thermal cutting/hydraulic tools** Use an oxygen-acetylene flame or a plasma cutting machine to penetrate the metal box. It is time-consuming and requires professional equipment. It is suitable for safes with low security levels, but may damage internal items. --- ### **4. Social engineering attack** -**Password theft/coercion** Through monitoring records, keyboard wear marks, or inducing victims to divulge passwords (such as fictitious emergencies). This is the prototype of many movie plots, but in reality it is an illegal act. --- ###**Important legal and ethical tips** -**Legality**: Attempting to crack the safe without the express permission of the owner is a criminal offense (theft, destruction of property, etc.). Locksmiths need to present their qualifications and obtain authorization documents before they can operate. -**Safety design**: Modern high-security safes (such as UL certification) use anti-drilling steel plates, anti-peep password disks, and multiple error self-locking technologies, which are almost impossible for non-professionals to crack. --- If you encounter a situation where the safe cannot be opened (such as forgetting your password), it is recommended to contact **Official after-sales**or **certified locksmith** to avoid property damage or legal risks caused by self-destruction. Most of the “quick cracking” plots seen in the movie have been artistically exaggerated, and they are rarely feasible in reality.