Biometric Authentication vs. Traditional Methods: Pros and Cons

Juliana Muñoz

Juliana Muñoz

In the digital age, identity verification is a fundamental aspect to ensure security and trust in online transactions. The digital onboarding process, where users register and authenticate on a platform, requires a robust identity verification solution. Two common methods to achieve this are biometric authentication and traditional methods. In this article, we’ll look at the pros and cons of each to help you make an informed decision.

1. Biometric authentication

Biometric authentication uses a person’s unique physical characteristics or behaviors to verify their identity. This includes fingerprints, facial recognition, voice, iris and even vein pattern. The use of biometric authentication has several advantages:

  • Better security. Biometric features are difficult to fake, ensuring greater security compared to traditional methods.
  • Easy to use. Users can authenticate easily and quickly using biometric features, eliminating the need to remember complicated passwords.
  • Better User Experience (UX). Biometric authentication provides a more seamless and convenient experience for users, which can contribute to greater satisfaction and retention.

On the other hand, there are some aspects to consider when implementing biometric authentication:

  • Data security and privacy. The collection and storage of biometric data raises privacy and security concerns. It is essential to have appropriate policies and security measures in place to protect biometric information.
  • Costo y complejidad de implementación. Implementing biometric authentication may require significant investments in technology and human resources. It may also require integration with existing systems, which can be complex.
  • Dependencia de dispositivos compatibles. Some biometric methods require specific devices to operate, which can limit adoption and access to biometric authentication.

2. Traditional authentication methods

Traditional authentication methods include passwords, security questions, and authentication tokens. Although these methods are widely used, they also have their advantages and disadvantages:

  • Familiarity. Users are familiar with traditional authentication methods, so they do not require new technologies or specific devices.
  • Wide availability. Traditional methods are widely used and available on most online platforms and services.
  • Low implementation cost. Implementing traditional methods typically requires minimal investment compared to biometric solutions.

But traditional methods also have disadvantages:

  • Limited security. Passwords can be vulnerable to hacking and guessing attacks. Security questions can be compromised if hackers gain access to the user’s personal information.
  • User experience. The need to remember and manage multiple passwords can be inconvenient and frustrating for users.
  • Potential de errores humanos. Users may make mistakes when entering or remembering passwords, which can lock out access to their accounts and cause inconvenience.


When it comes to choosing between biometric authentication and traditional methods, it is important to consider the pros and cons of each. Biometric authentication offers greater security and an improved user experience, but can require significant investments and raise concerns about privacy and data security. Traditional methods are more familiar and low-cost, but their security can be limited and they can frustrate users.

Ultimately, choosing between both methods will depend on the specific needs and requirements of your users and your security goals. When evaluating these options, it is advisable to consult with subject matter experts and consider technical feasibility, legal aspects and compliance policies to make an informed and satisfactory decision.

On our blog, you will find more information about remote identity verification and innovative solutions for digital onboarding. Feel free to explore our other articles for more knowledge!

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