Recovery codes are one-time use, and provide access to your account by skipping the second authentication factor step.
You should keep them in a safe place, the same way you keep a password.
The backup codes are displayed at the end of the enabling multi-factor authentication procedure.
You can also view and manage them at any time in the Profile > Security section.
The platform allows a maximum of 16 concurrent recovery codes. If you have used recovery codes, you can have new codes generated, up to a maximum of 16, by clicking on the Generate recovery codes button.
To use a recovery code to log in to Cantook Hub, proceed as follows:
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Enter your user name and password (or follow a login link received by email).
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At the multi-factor authentication step, click on Use recovery code.
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Enter one of your recovery codes, then click Continue to access your account.