Minn. Stat. § 336.4A-201
"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 canceling 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 impose an obligation on the receiving bank or the customer, and may require the use of algorithms or other codes, identifying words , numbers, symbols, sounds, biometrics, 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 or requiring a payment order to be sent from a known email address, IP address, or telephone number is not by itself a security procedure.
Minn. Stat. § 336.4A-201
1990 c 582 art 1 s 9