How do programs with 2fa enabled keep track of the 2fa code, since it changes in a short time span and there’s many different ways / apps to generate said code?

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How do programs with 2fa enabled keep track of the 2fa code, since it changes in a short time span and there’s many different ways / apps to generate said code?

In: Technology

6 Answers

Anonymous 0 Comments

The offline token is only generated by same algorithm as the servers token using the device’s current time. The token is valid for a span like 2 minutes. All devices are time sybced. Same input, same algorithm m, means same output.

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