When you want to log in, you need to type a six-character passphrase into a login field and then follow the directions on the screen. When the device is plugged into a USB port, it sends an encrypted challenge text between your PC and the YubiKey’s secure element. It can also be used as an additional security measure for logging in to your computer if you have multiple people using the computer. The algorithm creates one-time passwords that are used for logging into your account or accessing sensitive information online. This protects your bank accounts, medical records, and social exchanges.
It can be used as a login key for many popular services, including LastPass, Dropbox, Google,, Twitter, Facebook, and WordPress. YubiKey is a small device that provides two-factor authentication for logging in to your accounts or accessing sensitive information online by generating one-time passwords when you so need them.
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