Ohio Rev. Code § 4513.242: Displaying security decal on side window or sidewing.

(A) Notwithstanding section 4513.24 and division (F) of section 4513.241 of the Revised Code or any rule adopted thereunder, a decal, whether reflectorized or not, may be displayed upon any side window or sidewing of a motor vehicle if all of the following are met:

(1) The decal is necessary for public or private security arrangements to which the motor vehicle periodically is subjected;

(2) The decal is no larger than is necessary to accomplish the security arrangements;

(3) The decal does not obscure the vision of the motor vehicle operator or prevent a person looking into the motor vehicle from seeing or identifying persons or objects inside the motor vehicle.

(B) Whoever violates this section is guilty of a minor misdemeanor.