what is it called when you copy someone's signature
Signature forgery Signature forgery refers to the act of falsely replicating the signature of another person.
Certified copy Except for notaries public in some states, there are no officials in the US who are authorized to make certified copies of any kind of document presented to them. If one is in a state where notaries public are not authorized to make certified copies, one must deal with the entity that issued the original document to obtain a certified copy.