What happens if you don't have your cell phone and so you don't get the code from Intuit? They suggest "another method" but do not clarify what method that is.

[itonewbie · Accepted solution]

You should also have an option to receive it via email.

[Just-Lisa-Now-]

As part of this enhancement, Multi-Factor Authentication (MFA) will be required on initial login.  A code will be sent to you via text messaging or email. https://accountants-community.intuit.com/articles/1860099

[IRonMaN]

This is America - who can be detached from their cell phone for more than 5 minutes without suffering major withdrawal symptoms?