No to passkey
I consider highly risky to link a code (of an independent device) / my fingerprint to a yahoo account, or any account. 25 yrs of internet experience taught me this is never a good idea... what is wrong with a good password ?! ...Please DO NOT impose this rule of signing in to a yahoo account - or else I'll have to leave Yahoo (which I DEFINETELY do not wish)... Thank you.
6th
ranked