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Deadbolt Lock Replacement Over time, locks can wear out. Sometimes, a key can be stuck in a lock or simply locking and unlocking it repeatedly can cause damage to the hardware. Rekeying your locks can solve this issue, but the new lock is a far better option. New locks are hard to jimmy and present new designs that let honest people in and keep dishonest ones out. Deadbolts A deadbolt is the best option to secure your door. These locks are much harder to break in than a doorknob or lever lock because they have an extra-strong bolt that is recessed into the door frame. In order to ensure your home is safe, it is important to regularly monitor the condition of your deadbolt, and replace it if it shows signs of wear. A deadbolt could be a lock that is keyed, which can be opened by using a key on one side and an open thumb turn on the other, or a double-cylinder lock which requires homeowners to utilize keys on both sides of the door to open it. The type of lock you choose will depend on the degree of security you want for your home, and a locksmith can assist you in determining which type of deadbolt is best suited to your needs. If you are planning to install a new deadbolt yourself begin by taking off the old bolt and its hardware. Use a screwdriver on the two screws that are located on the inside of the bolt. Remove the set plate that is what holds the bolt in place and connects it to the doorframe. You'll also need to remove the bolt itself and then the strike plate that is on the outside of the door. Install the new deadbolt next by inserting it with the latch facing upwards into the strikeplate. The bolt must be reattached to the strike plate with short woodscrews. It is crucial to review the instructions for installation that came with your new deadbolt to make sure you're following the steps correctly. If you are unsure what to do, consult an expert in your local hardware store. Tell them the measurements you have taken on your door. They will be able to guide you in the right direction and point out models that will work with the hardware you already have. If you're using a lock with an ANSI rating, then you should look for one that is grade two or higher. Repair My Windows And Doors means that the lock has met industry standards for strength and durability. Deadlocks The deadlock situation is one where processes are unable to continue with their work since each process has locked a resource that a different process also needs. This results in a cycle of waiting in which the processes can't be carried out (Mutual Exclusion). To avoid this issue the operating system must have a method of detecting deadlocks. In addition, it must be able to resolve them when they occur. A common way to avoid deadlocks is to allocate resources to a single category. For example it is possible to divide resources into categories such as memory, printers, or CPUs. This way, all processes can access the same resources without creating deadlocks. This method can be paired with a Banker's basic algorithm to detect deadlocks. This method examines the status of each step and if they haven't completed their work, it is considered that the process is stuck in a deadlock. However this method isn't foolproof. A programmer can still create a deadlock which the operating system would not detect. To avoid deadlocks, you could also demand that each process releases its own resources before requesting any new ones. This allows the operating system to anticipate requests for processing and free existing resources. This prevents starvation but has some disadvantages such as late process inception and frequent preemptions. Another option is to use a deadlock detection system that makes use of a queue to monitor the state of each process and its children. This type of mechanism can be useful in identifying deadlocks that aren't detected by a simple test. However, it will only be efficient when the operating system is designed to allow this type of fix. Other methods of preventing deadlocks involve the use of a priority queue. In this, each process is assigned a numerical priority. The higher the priority of a process is, the more likely it is to be the victim of a rollback. This technique is great for reducing the number deadlocks, however it could result in processes with low priority being delayed indefinitely. For this reason, it is not recommended for high-priority tasks. Mul-T-Locks The Mul-T Lock cylinders and deadbolts have been designed to be more secure to traditional locks. They are forged with strong materials and an exclusive technology that provides resistance to attempts to pick, bump or drilling. This means you can sleep peacefully knowing that your home or business is secured. It takes time and effort to overcome these locking systems. However, it's not impossible. For instance, older versions of Mul-T-Lock had major issues with lock-picking techniques, and have been shown in videos to be easily picked. However, the most recent version of Mul-T-Lock is highly resistant to these methods and has stood up to the scrutiny of experts in the field. The key to this level of protection is the inner pin stacks. They are organized in dimpled layers within the outer driver pin stacks. The dimples are small islands in their center that control the lifting of the pin stacks within them and allow them to reach the shearline. Once they are there, they will press against the inner key-pin bindings to set. The outer drivers are then removed from the plug and the lock can be opened. This system also provides additional protection against pulling attacks by extraction. This is achieved by adding an internal shear line that makes it harder to ram the cylinder with an external tool. The cylinder also has a shear line on the top and bottom to provide additional protection. In addition, there are rear and side pins that offer additional resistance when you pick, drill and pry. This system also adds security by making it impossible to duplicate. This is accomplished by requiring a Mul-T-Lock key card and allowing copies to be made only at official authorized locksmiths. It is unlikely that anyone would attempt to copy a Mult-T-Lock from a photograph, because it is not permitted without an official Mul-Tlock card. Mul-T-Lock A multinational company, specializes in high-security locking solutions. They have been in the business of developing, manufacturing and marketing cylinders for over five decades and are recognized all over the world for their innovation and quality. They are in compliance with a variety of major global standards such as UL, CEN, VOS, and SKG. Mortise Locks A mortise is a rectangular box-shaped device which fits into the cutout in the front door. They are popular in Europe and are available in a variety of designs that can be used to fit any type of door. They can be recessed deep into the edges of the door, or flush with the outside face. They can be operated by a key or handle from the outside. When installing or replacing a mortise lock, be sure to read the instructions included with the lock. Many mortise lock manufacturers have websites that provide instructions for installation and maintenance, as well as part lists. It is recommended to check these sites prior to beginning any repair or replacement work. It is a good idea to measure the mortise pocket on the door before beginning the work. Download or purchase a template to ensure that the right size is cut. If the pocket is too big the lock won't fit correctly and will be difficult to operate. It's also a good idea to mark the center of the hole to mark the face and edge of the door on the template using pencil. This will help to avoid the splintering of the drill when drilling. Once the pocket is correct in size and the pocket is properly sized, a mortise lock may be inserted into it and bolted into place. The spindle is screwed in to the handle or knob. The cylinder, which is responsible for the locking and unlocking functions of the lock case, can be keyed alike to the keys you already have, allowing for a single set of keys to be used for all doors within your home. In residential settings mortise locks are typically used in exterior doors that open to the street or to an outdoor patio or porch. They are also frequently found in doors of apartment buildings and large commercial complexes. In both settings, it is important to always be proactive about security and not become complacent, as burglars do look for easy ways into homes and businesses via doors that are not secure.