As our lives continue to move online, the importance of strong digital security measures becomes increasingly evident. Passwords have long been the standard method of authentication, but they come with their own set of vulnerabilities.

The solution? Biometrics. This technology has seen a rise in popularity lately, with many companies and industries turning to biometric identification as a way to enhance their security measures.

But what exactly is biometrics, and how does it work? In this article, we’ll explore this security feature to help you understand why you should make it a part of how you access your devices and accounts.

What are Biometrics?

Picture this: you’re standing at the door of your home, fumbling through your pockets for your keys. It’s dark outside, and your hands are freezing cold. It takes you a long time to find them and start inserting the key into the lock.

What if you didn’t have to do this anymore? What if you could simply look into a camera or scan your fingerprint to gain access? This is where biometrics come in.

This technology refers to the use of unique biological and physical characteristics for identification purposes. They could be anything from your fingerprint to your face, voice, or even your walking pattern. The idea is that these characteristics are so unique to each individual that they can be used to verify identity with a high degree of accuracy.

Examples of "what are biometrics"
Biometrics are commonly used in authentication. Image: Freepik

A system that uses biometrics typically captures these characteristics and stores them in a database. When a user needs to be authenticated, the system compares their biometric data to the data in the database to verify their identity.

Biometrics has seen a surge in popularity lately, especially in consumer electronics and mobile apps.

For example, many smartphones now use facial recognition or fingerprint scanning to unlock the device. This can help prevent unauthorized access if the phone is lost or stolen. Biometrics is also being used in financial transactions, healthcare, law enforcement, and other areas where identity verification is important.

Types of Biometrics

Biometrics comes in different shapes and sizes, each of which has its own strengths and limitations. There are currently three main groups you should be aware of: biological, morphological, and behavioral.

Biological Biometrics

As the most commonly used type, they rely on unique physical characteristics that are specific to each person. Your fingerprints, iris, and face are all examples of biological biometrics. These features are relatively stable and do not change much over time, making them ideal for identification purposes.

However, biological biometrics may not work for people with certain conditions, such as burns or injuries.

Morphological Biometrics

They are physical traits that can be measured or observed. Examples include height, weight, and body shape.

While these characteristics are unique to each person, they can change over time, making them less reliable than biological biometrics. Morphological biometrics are also more susceptible to manipulation and may not work well in certain scenarios, such as when someone is wearing loose clothing.

Behavioral Biometrics

Additionally, you can focus on unique patterns of behavior that can be used for identification purposes, such as the way someone types, their gait, and their voice. These patterns are not necessarily physical features but rather habits that are unique to each person.

Behavioral biometrics can be more difficult to capture and analyze than convenient physical traits, but they can be useful in scenarios where other biometrics are not practical or reliable.

Common Examples of Biometrics

Here are some of the most common biometrics that you might have already encountered in your everyday life.


This type of biometric relies on the unique patterns and ridges of your fingerprints for identification. You’re probably familiar with this one already – it’s used on your smartphone to unlock your device or to access certain apps.

Fingerprint biometrics are reliable and widely used, but they may not work well for people with certain skin conditions or injuries.

A person verifies themself using their smartphone's Touch ID feature
Many smartphones have fingerprint sensors. Photo: Freepik

Facial Recognition

Another popular biometric technology, it analyzes the unique features of your face, such as the distance between your eyes, nose, and mouth, to identify you. It’s used in security cameras, smartphones, and even social media apps to tag photos. Recent iPhone models have integrated it with Face ID feature.

Facial recognition is convenient and non-intrusive. It may not be as accurate as some other biometrics, especially if the lighting or angle of the face is not ideal.

Retina and Iris

These biometrics take advantage of the unique patterns of our eyes. Retina scans use the blood vessels at the back of the eye for identification, while iris scans analyze the patterns in the colored part of the eye.

These biometrics are often used in high-security environments, such as government buildings and airports. While they are very accurate, they can be invasive and may not work well for everyone.


This biometric analyzes the unique characteristics of your voice, such as pitch and tone. It is often used in call centers and virtual assistants. It’s convenient and doesn’t require users to scan anything. However, it’s often prone to scams and imposters.

Hand Vein

Often used in healthcare settings, it analyzes the shape and size of the hand, helping identify patients without invasive procedures. Many access control systems, such as in workplaces or schools, also employ similar systems.

Why Use Biometrics?

Biometrics offers several advantages over traditional authentication methods like passwords. As technology continues to evolve, it’s likely that we’ll see even more widespread adoption of biometric authentication in the future.

Convenient for Users

A senior woman using biometric authentication on her phone.
Biometric authentication is user-friendly. Photo: Freepik

With passwords, users often struggle to remember complex combinations of letters, numbers, and symbols. This can lead to frustration, forgetfulness, and ultimately, weaker security.

In contrast, biometric authentication is often as simple as placing a finger on a scanner or looking into a camera. This makes the authentication process more user-friendly while still maintaining a high level of security.

Difficult for Cybercriminals to Impersonate

Unlike passwords, which can be stolen or guessed, biometric data is unique to each individual and cannot be easily replicated.

With biometric authentication, the stakes are much higher for would-be attackers. It’s virtually impossible to replicate someone’s unique biological or physical characteristics like fingerprints or facial features. This means that biometric authentication offers a much higher level of security than traditional authentication methods.

Concerns About Biometrics

Nothing is perfect, and biometrics-based authentication is no exception. One major concern is the privacy of biometric data. Some providers may collect and store this data in an unsafe manner, which could lead to it being stolen by hackers.

Another issue is the reliability and accuracy of poorly engineered biometric systems. They may not be as accurate or reliable, making them easier to spoof or hack and potentially allowing unauthorized access to your accounts and personal information.

How Locker Uses Biometrics to Protect Your Data

A credit card saved in the password manager Locker
Locker uses biometrics to protect your personal data.

Locker is a cutting-edge password manager that takes security seriously. In order to protect the credentials and private data of its users, Locker incorporates built-in biometric systems like Touch ID and Face ID to replace the need for a master password in certain situations.

This not only provides a strong layer of security but also makes life more convenient for users. No longer do you need to remember lengthy and complicated passwords, as your unique biological characteristics serve as the key to your sensitive data. With Locker, you can rest easy knowing that their data is safe and secure while enjoying the convenience of quick and automatic authentication.

Download Locker to take advantage of this exciting and innovative security feature in your digital life.