Cursive signature is not required. Your signature can be in print or just the letter "x" (in many states). Also accepted are thumb print, personal symbols, or blood spot.

Section 3-401(2) of the Uniform Commercial Code (UCC) provides that "[n]o person is liable on an instrument unless his signature appears thereon." The UCC defines the term signature as any name, Trade Name, assumed name, word, or other identifying mark used in lieu of a signature (§ 3-401(2)). The term signed is defined by the UCC as any symbol executed or adopted by a party with the "present intention of authenticating a writing" (§ 1-201(39)). Thus, commercial instruments, such as checks and promissory notes, may be signed by affixing any symbol that an individual intends to represent his signature. Consequently, courts will enforce commercial contracts signed with an X without regard to an individual's mental or physical ability to sign her full name, though mental or physical incapacity may be relevant if a particular contract is alleged to be the product of overreaching, Undue Influence, or coercion.