Promote Safety and Protection for You, Your Family and Your Belongings By Using the Different Kinds of Locks The crime rates in every parts of the world are increasing in each passing year, and some of the common crimes are robbery, theft, and burglary. And for that, the people are doing their best to protect and provide securement to themselves, their families and their properties. Most of the people, nowadays, are purchasing and using the different types of locks designed, manufactured and marketed as devices that can promote safety and protection and can help in preventing these common crimes from occurring. A lock is basically described as a fastening device that can be freed or released with a physical object like a fingerprint, RFID or radio-frequency identification card, security token, key, and keycard; a combination provided by the manufacturer or the owner; and with a secret information such as a keyword or password being supplied by the owner. Locks are divided into two categories, namely the locks with physical keys and the locks with electronic keys. There are five common examples of the locks with physical keys, and that includes the pin tumbler lock, which is composed and designed with a set of pins that can prevent the lock to open unless the correct key is used and inserted; the Abloy lock or disc tumbler lock, which is composed and designed with slotted rotating detainer discs; the lever tumbler lock, which is composed of a set of levers that can prevent the bolt from moving in the lock; the warded lock, which is composed of a set of obstructions or wards that can stop or prevent the lock from opening unless the right manufactured key is used and inserted; and the wafer tumbler lock, which is quite similar to the pin tumbler lock. The four examples of the locks with electronic keys are the keycard lock, which can be operated with the use of flat card like a driver’s license and credit card; the smart lock, which is recognized as an electromechanical lock that can open or close the door with the use of an authorized device through a wireless protocol and cryptographic key; the sidebar lock, which can operate through the use of fins on a radial key that can activate the sidebars by aligning a cylindrical code bar found within the lock; and the electronic lock, which is connected to an access control system and can operate via an electronic current. Some other types of locks are electric strike, cam lock, bicycle lock, child safety lock, chamber lock, time lock, rim lock, padlock, magnetic keyed lock, luggage lock, protector lock, police lock, Chubb detector lock, lock screen, mortise lock, magnetic lock, combination lock, cylinder lock, and deadbolt.