How to Evaluate Fingerprint Scanner Capture Quality?

Fingerprint Scanner Capture

You will find numerous products if you visit a fingerprint scanner online store, which may leave you confused about which one to buy. Therefore, in the article below, we have curated a list of criteria to help you evaluate the fingerprint scanner capture quality to choose the right product.

How Does a Fingerprint Scanner Work?

Biometrics technology is on the rise and offers numerous advantages compared to other security mechanisms. If you look at a fingerprint scanner, you will see a plain surface when you are supposed to press your fingerprint for recognition. This plain surface of the fingerprint scanner examines the ridges and valleys patterns that form the unique characteristics of a fingerprint. The scanner then extracts minutiae points specific to the ridges and valleys of the print, serving as a digital fingerprint representation.

When a user tries to gain access, a new template of the fingerprint is extracted and compared with the existing templates. If the templates match, the user is granted access.

Evaluating the Quality of A Fingerprint Scanner

If you are planning to buy a fingerprint scanner, you must carefully evaluate at least the top examples of 10 fingerprint scanners to determine which one is the best. Moreover, if you are wondering how will you evaluate the quality of the fingerprint scanner, you must look at the following criteria:

  1. Fast Identification:

The processor used by the scanner to identify a fingerprint should be high-speed. Different fingerprint scanners use different processors, such as optical, capacitive and ultrasonic. Capacitive scanners are known for their high accuracy, while external factors may affect optical scanners. On the other hand, an ultrasonic scanner is the latest technology and provides the most accurate 3D images of fingerprints. Therefore, to evaluate the quality of the scanner, you must look at the type of processor placed.

  1. Accuracy Rate:

The accuracy of a scanner is determined through a false acceptance rate and a false rejection rate. As the name suggests, a false acceptance rate is the number of times a fingerprint scanner accepts an authorised fingerprint, and a false rejection rate is the number of times a fingerprint scanner denies an authorised fingerprint.

  1. Image Resolution:

Capture quality is the resolution of the fingerprint image. Higher-resolution images capture more details, which enables better recognition accuracy. Consider the scanner’s dot per inch (DPI) to ensure a clear and precise image.


A fingerprint scanner’s capture quality is crucial to determine its efficiency. Therefore, when you plan to buy a scanner, carefully look at the criteria mentioned above to determine which one will be the best for you.


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