At locations like train stations, shopping malls or even central city points, public toilets are getting an important service point. Since the individual expectation of cleanliness is increasing, this service cannot be provided for free and payment becomes necessary. Almost everybody can remember such situation. Being in a foreign country or just not having the right change in the pocket and the need to respond to an “urgent call of nature”. Just tapping a credit card at the entrance of the public toilet or restroom could make live more relaxed. This payment service is fast and can be used at international hot spots.