Tenn. Code Ann. § 47-4a-201: 2024 Tennessee Code Title 47 - COMMERCIAL INSTRUMENTS AND TRANSACTIONS (§§ 47-1-101 — 47-50-121) Chapter 4A - FUNDS TRANSFERS (§§ 47-4A-101 — 47-4A-507) Part 2 - ISSUE AND ACCEPTANCE OF PAYMENT ORDER (§§ 47-4A-201 — 47-4A-212) Section 47-4A-201 - Security procedure

"Security procedure" means a procedure established by agreement of a customer and a receiving bank for the purpose of:

(i) Verifying that a payment order or communication amending or cancelling a payment order is that of the customer; or

(ii) Detecting error in the transmission or the content of the payment order or communication.

A security procedure may require the use of algorithms or other codes, identifying words or numbers, encryption, callback procedures, or similar security devices. Comparison of a signature on a payment order or communication with an authorized specimen signature of the customer is not by itself a security procedure.