In this article, we’re going to touch on the question as to which finger(s) is most commonly used whilst running a biometric fingerprint test.
The answer to this question really depends on the use case, as we’ll talk about directly below.
Which Finger Is Used For Biometric Fingerprint Recognition
The use case will determine the types of fingerprint required, for example if this is for a fingerprint time clock, which is used to sign employees into a business then any finger can be chosen, but it’s normally the index finger or ring finger ridge.
Now, if this is for forensic/security purposes, often all four fingers (especially including the index and middle finger) are scanned using a fingerprint scanner.
The FBI have been known for obtaining fingerprints via different ‘impression types’, depending on a variety of factors:
Type 4
Rolled impressions are the ten individually-taken fingerprint images rolled from nail to nail. The plain impressions are used to verify the sequence and accuracy of the rolled impressions.
Type 14
Identification flat impressions are taken simultaneously without rolling. These are referred to as plain, slap, or flat impressions. The individual’s right and left four fingers should be captured first, followed by the two thumbs (4-4-2 method). Instituting this finger capture method ensures the highest level of fingerprint sequence accuracy.
How Are Fingerprints Recorded?
This also depends on the use case, but most commonly a fingerprint reader can be used.
However, in forensic cases, the FBI use two different approaches:
Fingerprints can be recorded utilizing the following methods:
Standard Fingerprint Card (e.g., FD-249 and FD-258)—Use ink to record fingerprint images on standard fingerprint cards.
Live Scan—Fingerprint images can be submitted electronically using a live scan device. Electronic fingerprinting equipment should be properly maintained at all times. For a list of certified devices, please refer to the FBI Certified Products List.
FAQs
What Are Fingerprint Biometrics?
Fingerprint biometrics are a type of security measure that uses an individual’s unique fingerprint to verify their identity. This technology is often used in situations where it is important to ensure that only authorized individuals have access to certain information or resources. Fingerprint biometrics can be used for both physical and electronic access control, and they are generally considered to be more reliable than other types of biometric identification methods, such as iris scanning or facial recognition.
Why Is Fingerprint Identification Important?
Fingerprint identification is important because it is a unique way to identify individuals, since everyone has a unique fingerprint pattern.
Fingerprints are left behind whenever someone touches an object, and they can be used to identify the individual who left them. Fingerprint identification and authentication systems are mainly used in the technology, forensic and security industries.
How To Correctly Take Fingerprints
The FBI has a guide on how to do this, which we advise you to take a look at.