A lock is defined as a device which is produced and manufactured as a fastening which can be designed as either a mechanical or electronic-type. This specific device can be released by supplying a secret information, such as a password or a key code; by a physical object, such as a keycard, RFID card, security token, key and fingerprint; or by a combination. There are two basic categories of locks, namely the locks with electronic keys and examples for this includes the electronic lock, the smart lock, the keycard lock, and the sidebar lock; and the locks with physical keys and examples for this includes the warded lock, the pin tumbler lock, the lever tumbler lock, the disc tumbler lock or Abloy lock, and the wafer tumbler lock. The different types of lock are time lock, padlock, rim lock, bicycle lock, cam lock, chamber lock, child safety lock, combination lock, cylinder lock, dead bolt, magnetic keyed lock, luggage lock, protector lock, police lock, chubb detector lock, lock screen, magnetic lock, mortise lock, and lever tumbler lock.
The individual who is skilled, knowledgeable, has undergone training, obtained a degree or certificate for the profession called as locksmithing, and completes apprenticeship on such profession is called as a locksmith. A professionally trained locksmith can be called in different ways and their titles may depend on their specialized skills and training, and that includes institutional locksmith, security consultant, automotive locksmith, commercial locksmith, residential locksmith, and forensic locksmith. A professionally trained locksmith can provide their clients or customers with different services, such as installing security systems like alarms, opening or replacing locks, gaining entry to jammed or locked locks, extracting broken or snapped keys from any existing locks, implementing access control systems, gaining entry to safes; working on existing door hardware, such as hinges, frame repairs, door closers, and electric strikes; fixing broken locks, and making keys. The act of fitting and replacing keys is recognized as the most important part of locksmithing, and now that we are already living in the modern day and age, the modern locksmiths are most likely involved in the management, the implementation and the design of key control systems and keying; and they are also involved in the act of installing any high-quality sets of lock. There are a lot of locksmiths that can be found in every parts of the world, and most of them are working solely, while some works under a company. The people who wants to hire the services of the best and the most efficient locksmiths near them can find them through the print ads given by these professionals, through the recommendations of their families, colleagues and friends; or through the use of the internet.