37 Tex. Admin. Code § 28.44 – Fingerprint and Signature

(a) TDCJ shall collect and forward thumbprints with each DNA sample collected under this subchapter.
(b) The thumbs must be rolled to capture the entire print.
(c) TDCJ shall provide a legible signature of the person collecting the sample and, for identification purposes, should make reasonable efforts to collect a legible signature from the subject providing the sample.

Source Note:The provisions of this §28.44 adopted to be effective February 7, 2005, 30 TexReg 407; amended to be effective April 30, 2007, 32 TexReg 2371.