Finger scanning is often used for biometric authentication purposes, particularly in security settings where access is limited to authorized individuals. Some popular synonyms for finger scanning include fingerprint recognition, biometric identification, and digital fingerprinting. Fingerprint recognition involves the use of specialized software to match a person's unique fingerprint with an existing database of fingerprints. Biometric identification refers to the use of any physical or behavioral characteristics unique to an individual, such as voice recognition, facial recognition, or iris scanning. Digital fingerprinting is similar to fingerprint recognition but may also include behavioral biometrics, such as how a person types or swipes on a touch screen.