Enabling payment for items using a mobile device

The method of claim 5,

• wherein the identifier list includes a second item identifier identifying a second set of items;
• and wherein:
• the second item identifier differs from the first item identifier;
• or
• when the second item identifier is equal to the first item identifier, the method further comprises adjusting the second item identifier so that the second item identifier differs from the first item identifier.

A computer system comprising a mobile device coupled to a device manager, the mobile device enabling payment for items, the mobile device comprising:

• an authenticator for authenticating with a service provider;
• an activator for activating an application on the mobile device by means of an activation signal after authentication of the mobile device with the service provider;
• a responder for responding to the activation signal by sending an identification signal to the device manager;
• a receiver for receiving an identifier list after the responder sends the identification signal, the identifier list including a first item identifier identifying a first set of items;
• and
• a distributor for sending an indication of a selection of the first item identifier to
• the device manager;
• the device manager comprising:
• a confirmer for confirming authentication of the mobile device;
• and
• an identity establisher for identifying the mobile device after confirming authentication of the mobile device.