On faxed documents, it is often difficult to tell if a signature is authentic, both because clarity is a problem and also because signatures can be cut and pasted onto new documents from old documents. The Uniform Commercial Code provides that anything placed on a document with the intent to authenticate it is a binding signature for a valid contract. The UCC definition:
a. did not anticipate the technology problems arising from the fax.
b. is a common law definition.
c. is part of federal law.
d. will apply even in these fax situations.