The lock is subjected to physical stress, environmental contact and mechanical stress on a daily basis. Some models last for decades, while others fail after a few years. This may be due to natural wear and tear, quality of materials or improper use. The reliability of the lock depends not only on its design, but…

When faced with a locked door and lost keys, a person realises how important a good lock is. But even the most reliable mechanisms are not absolutely secure. Understanding the principles of their operation and methods of opening is necessary not only for intruders, but also for professional locksmiths to promptly help customers in emergency…