21 C.F.R. § 11.70 Signature/record linking.
Title 21 - Food and Drugs
Electronic signatures and handwritten signatures executed to electronic records shall be linked to their respective electronic records to ensure that the signatures cannot be excised, copied, or otherwise transferred to falsify an electronic record by ordinary means.
Title 21: Food and Drugs
PART 11—ELECTRONIC RECORDS; ELECTRONIC SIGNATURES
Subpart B—Electronic Records
§ 11.70 Signature/record linking.