Wired : AT PLACES LIKE Google and Facebook, engineers log into critical computing systems with more than just a username and password. They log in with the tap of the finger.
No, they don’t provide a fingerprint. They tap on a tiny USB device called a YubiKey. These keys—which plug into laptops and desktops—provide a level of security above and beyond a password, and some believe they can one day help replace passwords, which are annoying and not nearly as secure as people assume. Basically, the YubiKey generates a login code, specific to the user and the service at hand, each time it’s pressed. Click here to know more.
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