What Are U2F Keys and Where Are They Supported?

In recent months, you might have seen the phrase “U2F Keys” pop up frequently. Short for Universal 2nd Factor, U2F is best thought of as a second-generation form of two-factor authentication (2FA). U2F keys take existing 2FA technology and both simplify and strengthen it. U2F keys rely on either NFC or USB devices to function. It’s also an open standard, meaning you can buy a dedicated security key from any number of manufacturers. Some cost as little as $10. Using the security key is...

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