Seems that there is some evidence that Biden did not actually do the last minute pardons of folks like Anthony Fauci (why did he need a pardon???) and all the others..
It would seem to me that the use of the autopen should be reserved for instances, rare instances, where the President is travelling and needs to sign emergency authorizations in instances like war or terrorism or sudden natural disasters.
The rest is like “normal” voting: do it in person or it isn’t valid. Handwritten signatures.