Ohio Rev. Code Ann. § 2108.05
(A) A donor may make an anatomical gift by doing any of the following:
(B) A donor or other person authorized to make an anatomical gift under section 2108.04 of the Revised Code may make a gift by a donor card or other record signed by the donor or other person making the gift or by authorizing that a statement or symbol indicating that the donor has certified a willingness to make an anatomical gift be included in a donor registry. If the donor or other person is physically unable to sign a record, the record may be signed by another individual at the direction of the donor or other person and shall do both of the following: