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The evolution of MFA security tokens

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Key fobs generate one-time authentication passwords

Source:  Thinkstock

In the early days of multifactor authentication, there were one-time password generators that came in the shape of key fobs, with a small LCD screen and a button. When you pressed the button, the screen displays a sequence of numbers for 30 seconds. The sequence must be typed into the application during that time period.

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where can i buy one of these bad boys
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