Section 47-3401 - SignatureA. A person is not liable on an instrument unless:1. The person signed the instrument; or2. The person is represented by an agent or representative who signed the instrument and the signature is binding on the represented person under section 47-3402.B. A signature may be made: 1. Manually or by means of a device or machine; and2. 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.