(a) Any manufacturer, wholesaler, retailer, or other person required to maintain records of transactions under this subchapter shall obtain proper identification from the purchaser.
(b) “Proper identification” means a motor vehicle operator's license or other official state-issued identification of the purchaser that contains a photograph of the purchaser, and includes:
(1) The residential or mailing address of the purchaser, other than a post office box number;
(2) The motor vehicle license number of any motor vehicle owned or operated by the purchaser; and
(3) A letter of authorization from the business for which any substance specified in § 5-64-1001 is being furnished, that includes:
(A) The business license number and address of the business;
(B) A full description of how the substance is to be used; and
(C) The signature of the purchaser.
(c) The person selling, transferring, or otherwise furnishing any substance specified in § 5-64-1001 shall affix his or her signature as a witness to the signature and identification of the purchaser.