Ohio Rev. Code § 3772.22: Cashless wagering system.

(A) All casino facility operations shall use a cashless wagering system whereby all wagerers' money is converted to chips, tokens, tickets, electronic cards, or other instruments of value at the request of the wagerer that may only be used for wagering at a casino facility. Wagering shall not be conducted with money or other negotiable currency.

(B) Wagers may be received only from a person present at a casino facility. A wagerer present at a casino facility shall not place or attempt to place a wager on behalf of an individual who is not present at the casino facility.