A method and system for ordering, loading, and using admission tickets for access to access-controlled service devices, in which admission tickets are ordered from a reservation center through transmission of order data by an order channel. The order data includes the call number of a mobile communications terminal to which the ordered admission tickets are transmitted by a mobile network and are stored there in a memory module. The data exchange between this memory module and a reading device of the service device takes place over a contactless interface. Decisions about the access authorization of the user of the communications terminal are made, for example, in the reading device or in the communications terminal, taking into account the ticket information contained in the admission ticket, for example, limited to a digitally signed ticket number or with indications about the respective service device. And, in accordance with the decision, access to the service device is given or denied to the user through an access device connected to the reading device.