Section 554.3401 - [Effective Until 7/1/2024] Signature1. A person is not liable on an instrument unless the person signed the instrument, or the person is represented by an agent or representative who signed the instrument and the signature is binding on the represented person under section 554.3402.2. A signature may be made manually or by means of a device or machine, and by the use of any name, including a trade or assumed name, or by a word, mark, or symbol executed or adopted by a person with present intention to authenticate a writing.94 Acts, ch 1167, §48, 121, 122This section is set out more than once due to postponed, multiple, or conflicting amendments.