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by Thorrez 1477 days ago
>You're forced to have 2 devices

Do you consider a U2F key a device?

And it's not exactly 2. It's n+1, where n is the number of 2FA physical factors you expect to lose/break. If you expect to lose/break 0, then you need 1. If you expect to lose/break 5, then you need 6.