A fingerprint is comprised of the ridges of the skin, or minutiae, on the tips of our fingers. These ridges are 100 percent unique, comprised of variations of loops, whorls, and arches, which can be copied using digital imagery or ink. Fingerprints have been used for centuries to mark or sign documents, or even as personal seals in clay pottery.
The shape of the face is a very unique physical characteristic. Using computer vision technology, facial structure and shape can be identified and categorized, with specific “landmark” features, including the relative position and shape of the nose, eyes, jaw, and mouth. Advances in facial imaging today allow for 3D images, increasing the complexity and accuracy of face recognition algorithms.
Voice, or speech recognition, relies on specific characteristics of the spoken word. These include acoustic patterns, based on the size and shape of the mouth and throat, and behavioral characteristics, such as pitch, tone, and speaking style.
Iris patterns are considered one of our most unique characteristics. Even identical twins, whose face and voice might match, have irises that don’t. Due to varying eye colors, iris patterns are best recorded in the near-infrared spectrum. These devices product black and white imagery that produces much clearer photos of the iris than the natural light spectrum can.
Behavioral biometrics, such as typing patterns and gait, are the latest development in biometric technology. The ability to record the length and pace of how we walk, or the specific way we type, allows for what is called continuous authentication, which can be used to verify identity over time, rather than during a single authentication session.
How did we use biometrics before the advent of modern technology?
Biometrics on the silver screen have had a major impact on public understanding.
Biometrics have been clouded by misinformation over the years.