Ohio Rev. Code Ann. § 4713.56
Every holder of a practicing license, instructor license, independent contractor license, or boutique service registration issued by the state cosmetology and barber board shall maintain the board-issued, wallet-sized license or electronically generated license certification or registration and a current government-issued photo identification that can be produced upon inspection or request. Every holder of a license to operate a salon issued by the board shall display the license in a public and conspicuous place in the salon. Every holder of a license to operate a school of cosmetology issued by the board shall display the license in a public and conspicuous place in the school. Every individual who provides cosmetic therapy, massage therapy, or other professional service in a salon under section 4713.42 of the Revised Code shall maintain the individual's professional license or certificate or electronically generated license certification or registration and a state of Ohio issued photo identification that can be produced upon inspection or request.