A vending machine comprising: a payment interface that accepts payment from a user of the vending machine, the payment interface having an exterior surface； an object dispensary that dispenses an object after the user makes payment via the payment interface, the object dispensary having an exterior surface； and an antimicrobial coating applied to the exterior surface of one or more of the payment interface and object dispensary； wherein, the antimicrobial coating includes a silane quaternary ammonium ion or salt thereof. The silane quaternary ammonium ion or salt thereof can be one or more of: 3-(trimethoxysilyl)propyldimethyloctadecyl ammonium ion, 3-(trimethoxysilyl)propyldimethyloctadecyl ammonium chloride, 3-(trihydroxysilyl)propyldimethyloctadecyl ammonium ion, or 3-(trihydroxysilyl)propyldimethyloctadecyl ammonium chloride. The vending machine can further include a user interface where the user commands which object the vending machine will dispense at the object dispensary, the user interface having the antimicrobial coating applied to an exterior surface of the user interface.
