Veincheck is a biometric system which uses back‐of‐hand vein patterns to verify an individual's identity. A biometric system can be loosely defined as a means of verifying an individual's identity by analysis of a physiological feature or a characteristic action. There are a wide variety of biometric systems under development ranging from signature to fingerprint to voice. Biometric systems are often compared on the basis of their False Accept Rates (FAR) and False Reject Rates (FRR). These rates are also referred to as Type 1 and Type 2 errors respectively. The acceptable values and the relative importance for these error rates varies from application to application. It is generally agreed that error rates of much less than 1 per cent are needed before deploying a biometric system for use by the general public.
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