Equal Error Rate (EER)

Equal Error Rate (EER) is a metric used to evaluate the accuracy of biometric or security systems, such as fingerprint scanners or facial recognition. It represents the point where the system’s false acceptance rate (incorrectly allowing unauthorized access) and false rejection rate (wrongly denying authorized users) are equal. A lower EER indicates a more accurate system, as these two types of errors are minimized and balanced. Essentially, EER provides a single comprehensive measure of a system’s overall performance, helping to compare and select the most reliable technology.