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CAPTCHA is a test to distinguish humans from bots on websites, often involving distorted images or audio. Learn about its origin, purpose, characteristics, and challenges for accessibility and artificial intelligence.
Biometrics are body measurements and calculations related to human characteristics and features. Biometric authentication is used in computer science as a form of identification and access control based on biometric identifiers, such as fingerprint, face recognition, DNA, etc.
reCAPTCHA is a CAPTCHA system owned by Google that distinguishes between human and automated access to websites. It started as a project to digitize books and images, and now uses behavioral analysis and image recognition to verify users.
A facial recognition system [1] is a technology potentially capable of matching a human face from a digital image or a video frame against a database of faces. Such a system is typically employed to authenticate users through ID verification services, and works by pinpointing and measuring facial features from a given image. [2]
A biometric device is a security device that verifies or recognizes the identity of a living person based on a physiological or behavioral characteristic. Learn about the history, types, uses and problems of biometric devices, such as fingerprint, iris, voice and signature recognition.
Verification and validation are procedures for checking that a product, service, or system meets requirements and specifications and fulfills its intended purpose. Verification is an internal process of evaluating compliance with design specifications, while validation is an external process of establishing evidence of fitness for purpose with end users.
AFIS stands for automated fingerprint identification system, a computer-based technique for matching fingerprints against a database. AFIS is used by law enforcement agencies for criminal identification and by civil systems for various purposes, such as background checks and credentials.
Learn about the formation, classification and use of fingerprints as a biometric technique and a method of forensic science. Find out how fingerprints are influenced by genetics, environment and development, and how they are used to identify or exclude individuals.