The Most Common Types Of Locks

Do you ever feel like you just can’t keep up with the ever-changing world of security and locks? Locks are used to protecting property and personal possessions from unauthorized access. It can be difficult to know what type of lock is right for you, especially when there are so many different types out there. 

Here are the most common types of locks and how they work, so you can make an informed decision when it comes to locking up your home or office.


Padlocks are a type of lock that is typically composed of metal and may include a cylinder or circular design. They are primarily used to secure objects such as gates, fences, and containers by securing them with a metal bolt.

Padlocks come in several varieties including:

  • Keyed padlocks, which require keys for opening
  • Combination padlocks, which can be opened without keys through the use of numerical combinations
  • Regular padlocks, which do not have any additional features
  • Key-retaining padlocks, which prevent the removal of the key until after it has been secured
  • Circular padlocks feature an advanced locking mechanism.

The selection of a particular type of padlock depends on the level of security desired and the environment in which it will be used.


Deadbolts are types of locks that are widely used for home and commercial security.

Deadbolt locks come in two main categories: single-cylinder deadbolts, which can be opened from the inside with a thumb turner or key; and double-cylinder deadbolts, which require a key to open both sides of the door. Double-cylinder locks offer more security than single cylinders as they cannot be easily broken into if an intruder has access to the outside handle.

Other common lock varieties include traditional key locks, rim cylinder locks, and electronic locks such as biometric systems. Each type has its own advantages and disadvantages depending on the application.

For example, traditional key locks may be suitable for internal doors but not secure enough for external ones while electronic locks require a power supply to operate correctly.

Overall, selecting the right type of lock is important in ensuring the proper security of premises or possessions.

Knob Locks

Knob locks are a type of lock that uses a cylinder or knob to secure a door. They are most commonly used on residential doors and are relatively inexpensive. Knob locks are easy to install and use, but they are not as secure as deadbolts and other types of locks. Knob locks can be picked or easily bypassed, which makes them less secure than other locks.

Combination Locks

How secure is a combination lock?

Combination locks also referred to as cylinder locks, are keyless locks that require the correct numerical sequence to open.

These types of locks have become increasingly popular due to their convenience, ease of use, and enhanced security features such as smart door locks with biometric recognition or keypad locks with digital passwords.

Keyed locks are still commonly used but may be seen as less secure than combination ones since they can easily be picked or duplicated.

Therefore, it is important for users to understand the different levels of security offered by each type of lock in order to make an informed decision on which one best suits their needs.

Digital Locks

Digital locks have become increasingly popular in recent years, providing an additional layer of security for homes and businesses.

Electronic locking systems are installed by professional locksmiths and offer a variety of features to meet the needs of different environments.

These include electronic door locks that can be opened with either a combination or numerical keypad, as well as double doors that require two sets of keys.

Digital locks are often considered more secure than traditional mechanical lock-and-key systems due to their complexity; however, it is important to note that these kinds of locks do still require regular maintenance from experienced technicians in order to ensure maximum security.

Biometric Locks

Imagine a world where you never have to worry about remembering or losing your key; a world of security and convenience.

Biometric locks are the answer, as they rely on unique physical characteristics such as fingerprints and retinal scans for access control. With biometric locks, it is no longer necessary to carry around padlocks, keys, knobs, or any other type of traditional lock.

Instead, these smart locks provide an additional layer of protection with metal cylinders that sense fingerprints and other forms of identification in order to open securely. In addition, cam locks can be used in combination with biometrics for added security measures by providing greater flexibility when it comes to identifying authorized users.

As technology continues to advance, so does the potential for more sophisticated biometric locks which can offer even higher levels of safety and assurance.

Keyless Entry Locks

Keyless entry locks are a type of lock that does not require the use of physical keys. Instead, they are opened with a code or other access methods such as biometric identification, radio-frequency identification (RFID), wireless technology, Bluetooth, and Near Field Communication (NFC).

Keyless entry locks come in various forms including lock cylinders, mortise locks, lever handle locks, deadbolts, and padlocks. Lock cylinders usually consist of a single-cylinder mechanism whereas double-cylinder deadbolts require two keyed mechanisms on either side of the door.

Remote entry is another popular form of keyless lock which uses remote control devices to open doors from a distance without having to enter any codes or unlock the door by hand. Keyless entry locks provide an efficient and secure way to protect homes and businesses while still allowing easy access when needed.

Bottom Line

Security is of utmost importance in any home or business setting.

To ensure safety, it is important to be aware of the various types of locks available and their features.

Padlocks, combination locks, deadbolts, digital locks, biometric locks, and keyless entry locks are all popular choices for keeping the property secure.

Each type has advantages and disadvantages that should be taken into consideration when deciding which one best suits a particular situation.

As the old adage goes ‘an ounce of prevention is worth a pound of cure’; investing in security measures such as these can provide peace of mind knowing that possessions will stay safe from harm.

Read another great locksmith tip:

The Dangers Of DIY Locksmithing



Why Choose Us?

  • Open 24/7
  • 30 Minutes Arrival Time
  • Affordable Rates
  • Credit Cards Accepted
  • Certified Technicians
  • Licensed & Insured
  • 100% Satisfaction Guaranteed
  • 12+ Years Of Experience

Our Prices

Home Lockout $30*
Car Lockout $25*
New Lock Installation $60*
Mobile Locksmith $30*
Car Key Replacement $60*
Lock Re-Key $25*
Car Key Extraction $40*
Master Key System $40
Mailbox Lockout $25*
Trunk Lockout $30*
Mailbox Change $90*
File cabinet Change/Lockout $60*
Safe Installation & Service $60*
Spare Key Duplication $60*
Door Key Extraction $50*
Window Lock Installation
* $19 Service Call fee