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Deadbolt Lock Replacement Over time, locks can become worn out. Often jamming a key in a lock or simply locking and unlocking it repeatedly can cause damage to the hardware. Rekeying locks can be helpful but a brand new lock is the best solution. New locks are difficult to jimmy and present an updated look that will allow honest people in and keep dishonest ones out. Deadbolts Adding a deadbolt to your door is one of the best ways to secure it. These locks are harder to get into than a lever or doorknob lock due to an extra-strong bolt that is recessed deeper into the door frame. In order to ensure your home is safe it is essential to check the condition of your deadbolt, and replace it if it shows signs of wear. A deadbolt could be one that is keyed and operated with a key on one side and thumb turns on the other or a double-cylinder lock that requires homeowners to utilize keys on both sides of the door to open it. A locksmith can help decide which type of deadbolt is best suited to your security needs for your home. Begin by removing the current deadbolt and the hardware. Use a screwdriver on the two screws located on the inside of the bolt. Remove the set plate that holds the bolt in place and connects it with the door frame. It is also necessary to remove the bolt and then the strike plate on the outside of the door. Then, you will be able to install the new deadbolt by inserting it into the bolt with the latch facing up into the strike plate. Then, you'll need to reattach the bolt to the strike plate and secure it with short woodscrews. You should always check the instructions for installation that came with the deadbolt that you purchased to ensure that you're following the instructions correctly. If you're unsure of what to do, seek out an expert at your local hardware store. Let them know the measurements you've taken on your door. They'll be able help you navigate in the right direction and point out models that work with the hardware you already have. If you are using a lock with an ANSI rating then ensure that it is grade two or more. This indicates that the bolt has been tested and meets industry standards for strength and endurance. Deadlocks Deadlock is a situation in which processes are not able to continue their work, because each process has locked up the resource that another process also requires. This creates a loop of waiting in which the processes aren't able to be executed (Mutual exclusion). To avoid this problem, the operating system must be able to detect deadlocks. It must also be able identify them when they occur. To prevent deadlocks, it's common to assign all resources to a single category. For instance, a system can divide the resources available into categories such as memory, printers, and CPUs. This way, all processes can access the same resources without creating deadlocks. This method can be used in conjunction with a basic Banker's algorithm to detect deadlocks. This method monitors the status of each process, and in the event that they haven't completed their work, it is considered that the process is in a deadlock. This method isn't 100% reliable. A programmer could still create a deadlock that the operating system can't detect. Another method to avoid deadlocks is to insist that all processes hold and let their own resources go before soliciting new ones. This allows the operating system to preempt process requests and free up existing resources. This can stop the depletion of resources, but it has disadvantages that include late process initiation and frequent preemptions. A third method is to employ a deadlock detection method which makes use of a queue in order to track the state of each process as well as its children. This kind of mechanism is useful for finding deadlocks that can't be detected using a simple dynamic test. It can only be used when operating systems are designed to accommodate such a fix. Other ways to prevent deadlocks involve the use of a priority queue. In this, each process is assigned a numerical priority. The higher the priority is, the more likely the process will be a victim of rollbacks. This method is good to reduce the number of deadlocks, but it can result in low-priority processes being delayed indefinitely. This is why it's not recommended for tasks that have high priority. Mul-T-Locks Mul-T-Lock deadbolts and cylinders are designed to be more secure than traditional locks. They are made of strong materials and utilize patented technology to provide resistance to attempts to pick, bump drilling, prying, and so on. You can rest assured that your home or office is safe. It takes time and effort to overcome these locking systems. However, it's not impossible. For instance, earlier versions of Mul-T-Lock had serious problems with lock-picking techniques, and were shown in videos that they are easily picked. However, replacement window locks of Mul-T-Lock is extremely resistant to these techniques and has stood against the scrutiny of experts in the field. The key to this level of security is the inner pin stacks. They are organized in dimpled layers within the outer driver pin stacks. Small islands in the center of these dimples control the lifting of the pin stacks, allowing them to reach their shearline. Once they have reached their shearline, they will press against the key-pin bindings to set. The outer drivers are removed from the plug and the lock is opened. This system also provides extra protection against extraction pulling attacks. This is achieved by incorporating an internal shear line that makes the cylinder body more difficult to ram with an external tool. The Cylinder also has a shear line on the bottom and top to provide additional protection. This is in addition the pins on the sides and the rear that offer an additional level of resistance to pick, drill and pry. This system also adds security by making it difficult to duplicate. This is accomplished by requiring an official Mul-T-Lock key card and allowing only authorized locksmiths to make copies. It is highly unlikely that anyone would attempt to copy a Mul-T-Lock key from a photo, since it is not permitted without an official card. Mul-T-Lock, an international company, specializes in high-security locking products. They have been creating, manufacturing and marketing cylinders for close to five decades and are known all over the world for their innovativeness and quality. They comply with many global standards including UL CEN VOS and SKG. Mortise Locks A mortise is a rectangular box-shaped device that fits inside the cutout on the outside of a front door. They are very popular in Europe and are available in a wide selection of styles that can be used on doors of all types. They can be flush with the exterior or integrated into the edge. They can be opened by using an inside key or operated by turning a handle or knob from the outside. When installing or replacing mortise locks, be sure to carefully study the instructions included with the lock. Many mortise locks manufacturers have websites that provide instructions for installation and maintenance and parts lists. It is a good idea to visit these sites before starting any repair or replacement project. It is an excellent idea to measure the existing mortise pocket on the door before beginning work. Download or purchase an appropriate template to ensure that the correct size is cut. If the pocket is too big the lock will not fit properly and be difficult to operate. It's also a good idea to mark the center of the hole for the face and edge of the door on the template using a pencil. This will stop splintering during drilling. Once the pocket is correct in size, a mortise lock case may be inserted into it and bolted into the appropriate position. The spindle can be screwed into to the handle or knob. The cylinder, which is responsible for the locking and unlocking functions of the lock case, can be keyed to your keys that you already have, allowing for a single set of keys to be used for all doors in your home. In residential settings mortise locks are typically used on exterior doors that open to the street or an outdoor patio or porch. They are also commonly found in the doors of apartment buildings as well as other large commercial complexes. It is important to be proactive and not complacent regarding security in both environments. Burglars will look for entry points to businesses and homes via doors that are weak.