Ohio Rev. Code § 3911.05
Language of application
October 1, 1953 House Bill 1 - 100th General Assembly No life insurance company doing business in this state shall take any application, medical certificate, or other document, for insurance upon the life of any person, in cipher or by character of any sort other than ordinary written or printed language. Any application, medical certificate, or other document taken in violation of this section is void as against any person claiming under a policy of insurance issued thereon.