U2F (Universal Two-Factor)

U2F (Universal Two-Factor) is a security protocol that enhances online account protection by requiring two forms of verification. After entering your password, you connect a physical security device, like a USB or NFC security key, to confirm your identity. This additional step makes it much harder for hackers to access your accounts, even if they have your password. U2F is widely supported by many websites and devices, providing a simple yet effective way to strengthen security without relying solely on codes sent via email or text.