That assumes you are signing things often enough to have a signature that is reliably the same each time, which for me has _never_ been the case. Also, since d

That assumes you are signing things often enough to have a signature that is reliably the same each time, which for me has _never_ been the case. Also, since developing a disability in my hands, that _can't_ be the case -- there _will_ be variations in stroke speed due to level of pain/stiffness at the time.