“The Fifth Circuit Court of Appeals reinstated Texas voting rules that require signatures on absentee ballots to be verified. The law requires that signatures on the returned ballot match the signature on the initial absentee ballot application. If there’s still a question of the signature’s validity, the clerk can compare it to the voter’s signature already on file.”

https://pjmedia.com/news-and-politics/rick-moran/2020/10/20/federal-court-reinstates-absentee-ballot-verification-rule-in-texas-n1072379