Biometrics are crucial in securing personal devices, facilities, and borders, and in crime prevention. The accuracy of a biometric system is gauged by its false positive and false negative rates. Striking a balance between security and convenience is key, as leniency compromises security, while strictness hampers usability. Measuring these rates helps assess system effectiveness and the trade-off between convenience and security. More info: https://www.nist.gov/biometrics