[giantg2]

So if I switch between single hand typing and two hand typing, I would have to use a different/secondary authentication method?

[madalinab]

If the typing pattern is disproportionately different (as it may be the case between switching from single to two hand typing), you would need a fall-back or risk not being authenticated. Or, you could retry typing as you would usually do during an authentication.

[giantg2]

So if there are scenarios where you need a fall back, why not just use the fall back?