Tex. Code Crim. Proc. art. 38.27
Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023.
It is competent to give evidence of handwriting by comparison, made by experts or by the jury. Proof by comparison only shall not be sufficient to establish the handwriting of a witness who denies his signature under oath.
Tex. Code Crim. Proc. § 38.27