Biometric authentication has become an important security method for protecting online accounts and digital services. Instead of relying only on passwords, it verifies a user's identity using unique physical or behavioral characteristics such as fingerprints, facial recognition, iris scans, or voice patterns. This technology helps improve convenience while reducing the risk of unauthorized access. As businesses and individuals increasingly use digital platforms, biometric authentication continues to play a significant role in strengthening cybersecurity. Understanding how it works.