Ohio Rev. Code Ann. § 2925.58
(A) A seller or an agent or employee of a seller may not be found guilty of a charge of a violation of section 2925.56 of the Revised Code in which the age of the purchaser or other recipient of a pseudoephedrine product is an element of the alleged violation if the seller, agent, or employee raises and proves as an affirmative defense that all of the following occurred:
(B) In determining whether a seller or an agent or employee of a seller has proven the affirmative defense provided by division (A) of this section, the trier of fact in the action for the alleged violation of section 2925.56 of the Revised Code shall consider any written policy that the seller has adopted and implemented and that is intended to prevent violations of section 2925.56 of the Revised Code. For purposes of division (A)(3) of this section, the trier of fact shall consider that reasonable reliance upon the identification presented and the completed transaction scan may require a seller or an agent or employee of a seller to exercise reasonable diligence to determine, and that the use of a transaction scan device does not excuse a seller or an agent or employee of a seller from exercising reasonable diligence to determine, the following: