How to Use a U2F Key

How-To Geek: How to Secure Your Google, Dropbox, and GitHub Accounts With a U2F Key. “U2F is an emerging standard for physical authentication tokens. Current U2F keys are all small USB devices. To log in, you won’t need to enter an authentication code provided from an app or SMS — just insert the USB security key and press a button. Here’s how they work.”

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