(Credit: Yubico) A password isn’t enough to fully protect your accounts and logins anymore. Websites and apps offer two-factor authentication and biometric login features, but another way to secure your accounts is through a physical security key. A physical key serves as a backup to your password for verifying your identity. The right type of key can work with your computer and mobile phone, through a physical or wireless connection. Even if someone were to discover the password for one of your accounts, they wouldn’t be able to sign in without the physical key. As long as the key is safe and secure, your private information is protected.