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What Is A Biometric Lock? - 19 Types of Smart Locks Right Here 2022

What Is A Biometric Lock?

Are you struggling hard to find ways to keep your house, confidential data, and commercial buildings safe just because you keep forgetting your passwords? If yes, then biometric locks are what you need!

Other than that, we understand that managing the PIN code, pattern locks, and passwords is quite hard, and somehow unofficial people get to know about them. As a result, we need to keep them changing after every month, leading us to forget our important places’ passcodes.

However, it is obvious that if we secure some crucial things in a safe, we open it less as compared to other locks. However, unfortunately, we usually face frozen locks, and applying more force leads to the key break inside the lock. So annoying, right?

But, stop there!

To blow your problems away, we are here with a complete guide to answer all your questions. Additionally, you’ll also get to know about the best biometric door lock at the end of this article. So, tag along with us till the end! Let’s step in and check what a biometric lock actually is?

Table of Content:

What Is A Biometric Lock?

Biometric locks are also known as fingerprint locks. However, the name itself is quite explanatory. A fingerprint lock is a digital security system that grants access to only authorized persons by identifying their unique fingerprints.

Other than that, Biometric locks use personally recognizable information instead of keys. However, once the scanner approves you as an authorized person, it will let you come in.

Moreover, this biometric control solution is a stronger authentication method than PINs, key cards, and keys for a simple reason. They can be used by any unauthorized person and can also be stolen.

Consequently, biometric locks are the perfect option to keep the doors closed to all but enable only official ones to use them. Now, let’s have a look at how a fingerprint lock works.

How Does A Biometric Lock Work?

How Does A Biometric Lock Work?As you know, human fingerprints are unique and inimitable for each individual, just like our DNA. Biometric locks are constructed based on our unique and personal fingerprints to separate and recognize several users. These locks operate through scanning that converts your fingerprint data into numeric templates.

Other than that, every fingerprint scanner scans differently. For instance, if your biometric lock comprises “optical scanners,” they would capture your fingerprint photos and later on store them for matching purposes. However, anyone can trick these kinds of scanners by showing them the picture of fingerprints.

The second type we have is the “capacitor scanner.” They create an electric mold of your fingerprint, and of course, you can fool it by presenting the exact match of fingerprint mold. The third and the last type is “ultrasound,” and the hardest to be tricked. Moreover, it draws on high-frequency sound waves to penetrate the upper layer of your finger-skin and reads it on the inner.

However, if a match is found, the access is granted, and if not, the door remains locked, or sometimes it rings the alarm to alert the security that someone is trying to break in. but, the detailed question is still to be answered, so, let’s check out, if fingerprint door locks are safe or not?

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Is Fingerprint Door Lock Safe?

This century is full of technologies; in fact, people have made technology their mediums to enter, exit, and secure their homes. Moreover, if we talk about “are fingerprint locks safe?” then yes, but only if a system is not weaker than non-electronic or keyed locks.

Moreover, some low-quality biometric locks are composed of subpar materials that enable them to be broken by intruders. Furthermore, they also use Bluetooth and WiFi that allow ceasing functioning in case of a power outage or sudden break-in. Later on, you can use a backup key to unlock your door. However, burglars can easily exploit the backup keys.

As any person finds out the way around the lock, he can use nothing but just a tiny paper pin to unlock the door. Alternatively, a high-quality biometric lock not only prevents burglary but also alerts that something wrong is going on with the system. Consequently, a fingerprint door lock is safe only if you spend the amount on the right one.

How Many Types Of Biometric Lock?

Now that you know biometric locks are the safe option don’t forget to walk through its types to decide what you need to install.

1.    Biometric Door Lock

Biometric Door LockThis type of biometric lock is implemented in every kind of door. It enables access to the official person only for unlocking safe, commercial buildings or your house doors with a combination of fingerprints, facial patterns, voice cadence, and backup PINs.

2.    Biometric Gun Lock

The biometric identification system in the gun lock ensures secure access to the recognizable user. Moreover, it also helps in keeping the gun away from careless adults and children. Furthermore, the biometric gun lock system is far more reliable and can be unlocked in 300 milliseconds.

3.    Biometric Trigger Lock

A biometric trigger lock requires the fingerprint of the authorized person before unlocking the gun and enabling the trigger to be pulled. However, this technology can help prevent people attempting suicide, a child from shooting with any family member’s gun, and untrained individuals to use weapons.

4.    Biometric Lock Box

Biometric Lock Box

●      Small Lock Box


The small lockbox is a portable biometric box made of stainless steel to take your valuable and precious things with you anywhere, anytime.

●      Small Combination Lock Box

The Biometric combination lockbox is small to hide it anywhere, for instance, behind the files in the cupboard. Moreover, it also comprises a combination lock for keyless entry.

●      Small Key Lock Box

Small Key Lock Box

The biometric key lockbox is usually used for traveling as it can be ft in anyone’s pocket. Moreover, it is quite spacious to put more than six keys.


●      Small Lock Box For Medicine

Mini biometric lock box for medicine is crafter gun-safe and provides fingerprint identification. It is used to protect your prescription medication from inside the medicine cabinet.

●      Small Metal Lock Box

Small Combination Lock Box

Commonly, fingerprint metal lockboxes are gun-safe and portable because of their size. Moreover, you can secure your pistols, guns, and other valuable weapons or documents in it.

5.    Biometric Cabinet Lock

Biometric Cabinet LockThe fingerprint cabinet lock is designed to protect your worthy documents and other valuables from unauthorized entries. Furthermore, it gives you keyless and quick access to your cabinet in just seconds.

6.    Stack-On Quick Access Safe With Biometric Lock

You have so many options to store your valuables and guns. Stack-on quick access safe is one of them. You can give access to 28 different official fingerprints at a time for your convenience. Moreover, it can also be mounted on the wall.

7.    Stack-On Drawer Safe With Biometric Lock

You can fit a Stack-on drawer safe in the file drawer, desk, or nightstand. Furthermore, it offers you quick and reliable access to handguns and other precious assets with a biometric lock.

8.    Biometric Drawer Lock

Stack-On Drawer Safe With Biometric LockThe biometric drawer lock is crafted for keyless unlocking access with security in mind. Moreover, it is a perfect fit for a wooden drawer and enables single/multiple access management.

9.    Biometric Lock Kit

Next is the biometric lock kit. It usually comprises indoor electric locks, one waterproof biometric card reader, and a keypad. Furthermore, some manufacturers also include a “no-touch” exit button in their biometric lock kits for emergency purposes.

10. Biometric Door Lock System

A Biometric door lock system applies to every type of door. Usually, it provides fingerprint access, but it also comes with typing and voice cadences. Moreover, some biometric door lock systems also require facial patterns to grant access.

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11. Biometric Shotgun Lock

●      Gun Safe Biometric Lock

Gun-safe locks with biometric identification usually come with fingerprint scanners. Furthermore, it is mainly designed to protect your guns, pistols, and other firearms from unauthorized access. Moreover, it also offers backup entry with a silent digital lock.

●      Biometric Gun Trigger Lock

Gun Safe Biometric Lock

These biometric gun trigger locks come with only the concept; enables quick access to secured guns. Right now, there’s a single biometric gun lock called “Identilock” that requires users to touch fingerprint readers before allowing access.

12. Biometric Safe Lock

A biometric safe lock is a medium-sized box with a fingerprint reader to secure your jewelry and other valuable assets in the cabinet. This technology only opens the door once it scans and recognizes your fingerprint.

13. Biometric Fingerprint Door Lock (Biometric Fingerprint Lock)

The biometric fingerprint door lock is one of the smart door locks that only uses fingerprint recognition to unlock the door. Unlike other biometric doors, it does not accept facial patterns, voice, and typing cadences.

14. Biometric Deadbolt Lock

Biometric Deadbolt Lock

Biometric deadlocks are electronic locks with biometric recognition; fix on the doorknob to enable quick and reliable access. Moreover, it usually comes with the Bluetooth APP that offers an e-key to grant access to others.

15. Biometric Car Lock

Biometric Car LockNow, you can also implement biometric car locks in your cars and other vehicles. Once you install the biometric lock in your car, it will require the official fingerprints to start the engine. Moreover, it will send a message to the owner’s phone and shut the fuel pump down if someone makes wrong attempts.

16. Biometric Padlock

If you are quite a busy person and don’t have time for installing the biometric system, then biometric padlocks are what you need. They look like traditional locks and keys, but they require fingerprint or other biological data to unlock.

17. Biometric Exterior Door Lock

Biometric Exterior Door LockThese are the biometric locks that are installed at the exterior doors. Exterior doors are the entrance doors of your house or commercial building. Moreover, you can install an exterior biometric lock to the door to any secret room or place with confidential assets.

18. Outdoor Biometric Door Lock

Outdoor Biometric Door LockOutdoor biometric door locks do not include cabinets, medicine, gun, trigger, and other kinds of biometric locks. It can only be installed outside your room doors or commercial building’s main gate. Moreover, you can also set up outdoor biometric locks at the conference rooms and meeting room doors to avoid unauthorized people.

19. DIY Biometric Lock

So, here is the last and most exciting type – the DIY biometric lock. This one is a homemade biometric security system. Keep on reading so you will get your hands on the easiest DIY method of biometric lock for the front door.

So, these were the types of Biometric lock systems. Now, you can install double security for your most valuable assets, even if it’s your firearms, precious stones, or your home.

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Can Fingerprint Lock Be Hacked?

Fingerprint lock seems to be a trending security device in today’s era. But are they also like other digital security devices that can be hacked? Yes, if biometric locks are programmed or manufactured inappropriately, they can be vulnerable. However, when installed perfectly and used correctly, it can be as safe as any other high-security conventional door lock.

Moreover, the door locks with fingerprint and other biometric features are the securest type of smart locks as they are the trickiest to be fooled. But sometimes, extraordinary genius intruders can still hack those fool-proof systems. But, here are some factors that you should consider to prevent hacking your fingerprint locks.

1.    Reputable Companies

When it comes to the security of your home, you should never compromise on the product’s quality. Because some lesser-known manufacturers may build their protocols to skimp the prices, but it will also affect the ability to prevent hackers’ threats.

2.    AES Encryption

Fingerprint locks should use 128-bit AES encryption, minimally, for all of their communication. Moreover, it is the standard encryption method used by the US government and in most of the private sectors globally.

3.    Two-factor authentication

To make things more challenging for hackers, make sure that your fingerprint lock system uses two-factor authentication. Furthermore, this authentication system requires two forms of verifications to enable access to the user.

Any security system in this world can be hacked or reached into the wrong hands. But following the few factors mentioned above can help your biometric system be safe for a more extended period. However, what if the system fails? Let’s check out!

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What Happens When A Biometric Lock Fails?

Fingerprint digital door locks have outstanding features and high safety and security. However, we often encounter unexpected problems when a biometric lock fails; including:

1.    Sensor Doesn’t Response

When a biometric lock fails the system, it does not even recognize the fingerprints of the authorized person. Even if you put the fingers on the reading plate of the lock, the red light will start a warning alert accompanied by a short beep, and the door will not open.

2.    Long Beeps

Sometimes, when the biometric system is about to run out of battery, it continuously indicates a long beep with a red light. Moreover, sometimes due to the long beep, biometric systems can also lose their connector.

3.    Irreplaceable Until Unlocks

Lastly, when the system fails, it usually locks the door until the authorized finger is scanned or the problem is fixed. Moreover, you can’t even replace the biometric system until the door unlocks. However, it would be replaceable again, once you somehow open it.

Now, let’s see how you can fix some common problems in the biometric lock system.


How To Fix A Biometric Lock?

How To Fix biometric lock1.    Clean The Sensor Screen

If the biometric system is not accepting the fingerprint and beeps with the red light. Furthermore, different fingers are scanned at the same place; therefore, the reading plate cannot read the next fingerprint because of greasiness. So make sure to clean the sensor, then put the finger again and let it scan

2.    Weak Battery

A weak battery usually leads to red warning lights and longer beeps. To overcome this issue, you only need to replace the battery and adjust the connector if it is leaving its place. Now, clean your hands and fingerprint reading plate, and congratulations! The door is open.

3.    Incorrect fingerprint

Sometimes, the biometric lock system fails because of us. Usually, we do not enter the registration mode and keep on presenting the incorrect finger for scanning. Consequently, make sure to manipulate fingerprint registration and review the manual.

4.    Backup Passwords

It’s not only us humans who forget the passcodes, but sometimes the biometric lock system also fails to recognize the fingerprints. Therefore, if the door doesn’t open even after cleaning the reading plate, then back up passwords are the only way to unlock doors and re-register the fingerprint.

How To Change A Front Door Lock To A Biometric Pad?

Change A Front Door Lock To A Biometric PadAs promised earlier, we brought you some easy-breezy DIY steps to change your front door lock to a biometric system. Just keep following, and you’ll end up having a fingerprint door lock system on your front door. So, let’s jump in:

  • Purchase your authentic biometric lock kit online or from any local store but make sure to opt for a trustable brand.
  • Drill 2 inches deep holes in the side of the door’s deadbolt. Blow on those holes to remove all the tiny wood flakes on the door. Now, drill the second hole with 2 inches deepness in the doorframe to lock the bolt into it.
  • Put a screwdriver into the driver-board hole and fit the deadbolt into the lock mechanism perfectly. Now, install the latch on the edge of the door. Once both latch and deadbolt are installed, hammer the metal-plates and insert screws in the holes and turn the deadbolt tight.
  • Put a fingerprint verification lock in place on the outside of the door and secure the backplate to hold it in place. If your kit includes a weatherproof guard, then install it on the LCD of the fingerprint scanner.
  • Now, the biometric pad is installed, make sure to double-check that the door generates a tight seal and re-screw if it does not. Furthermore, everything should fit perfectly to insert batteries.
  • Lastly, install batteries into your biometric pad according to its requirements.

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What Is The Best Biometric Door Lock?

Searching for the best biometric lock can be a little hectic, but what if we tell you that your search ends here? Well, you heard it right; here we are talking about the Samsung SHS-H700 fingerprint door lock. This fingerprint door lock is a perfect solution for you if you are good at forgetting passwords.

Furthermore, it also enables you to give access to more than one person so that you can store your trustable neighbors’ and relatives’ fingerprints for emergency purposes.  Additionally, it contains the fingerprint recognition feature and has a mechanical key, passwords, and pin codes.

However, this biometric fingerprint door lock is not compatible with smartphones but comes with a privacy feature. Moreover, it offers dual security functions; you can use both fingerprint and keypad features to unlock the door once you enable it.

Wrapping Up

Summing up, biometric locks are secure, affordable, and fool-proof. Whether it is your home or office, installing a biometric door lock system will not only provide you peace of mind but optimum security. You can grant access to multiple users for your convenience.

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Comments 6

  • Which One Is Securest, Fingerprint, Or Number Lock?

    • When you use a digital key, there is always a chance to expose your passwords in front of an unauthorized person. However, no one can ever unlock a fingerprint lock without the fingerprint of the official person. For this reason, a fingerprint lock is more secure than a number lock.

  • Is It Complicated To Register The Fingerprint?

    • No, registering the fingerprint is not complicated at all. All you have to do is activate the fingerprint registration, put your finger on the scanner, press it, and let it store your fingerprint to unlock the door. Isn’t that easy?

  • What Should I Do If The Battery Runs Out Of Battery Lock Fingerprint?

    • When your lock sounds and flashes, it means that the battery is about to run out; however, still, you can use it for ten days. Moreover, fingerprint door locks usually use AA rechargeable or AA dry batteries. Recharge your battery or get the new one from the market.

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