Patent ID: 7942337

Claim:
A card, comprising: an physical interface that connects to a port of a mobile host device, wherein the mobile host device includes a Graphical User Interface (GUI); an communication module that wirelessly receives Radio Frequency (RF) signals from and transmits RF signals to an access terminal; secure memory that stores a plurality of selectable user credentials, wherein the user credentials execute transactions with access terminals and each are associated with different institutions, the secure memory includes master credentials and a master security framework, and the master credentials and the master security framework enable financial institutions to update the user credentials and associated security frameworks; a user-interface module that presents and receives information through the GUI of the mobile host device; and a transaction module that dynamically switches between the plurality of selectable user credentials in response to at least an event and wirelessly transmits to the access terminal a response to a requested transaction including user credentials selected from the plurality of selectable user credentials, wherein the card executes transactions with access terminals without adding hardware, software or firmware to the mobile host device.