a method is provided for using an application in a mobile station . the application has a first mode of operation and a second mode of operation . the first mode of operation is passive . in the second mode of operation the application controls a master control unit of the mobile station . also provided is a system for making payments , comprising at least one mobile station which has an associated application , a component for using the application , and a first transceiver for providing local data transfer . the system also comprises at least one cash register or the like , which has a second transceiver for providing data transfer . the application has a capability for causing data to be transferred from the first transceiver to the second transceiver .