Abstract: The present disclosure is directed to a system and method for interfacing transaction cards with mobile devices. In some implementations, a method includes identifying the mobile host device in response to at least insertion of at least a portion of the card into a port of the mobile host device. The mobile host device includes a Graphical User Interface (GUI). The card wirelessly executes financial transactions with a retail terminal independent of the mobile host device and presents and receives information through the GUI of the mobile host device. One or more commands are transmitted to the mobile host device in response to at least an event. The card substantially controls one or more hardware elements of the mobile host device using the one or more commands.

Abstract: The present disclosure is directed to a system and method for presenting Web pages through mobile host devices. In some implementations, a payment card includes a physical interface, memory and a Web server module. The physical interface interfaces the card with a mobile host device including a Graphical User Interface (GUI). The card executes wireless transactions independent of the mobile host device and presents and receives information through the GUI of the mobile host device. The memory stores offline Web pages. The Web server module dynamically generates at least one offline Web page in response to at least an event and presents the generated offline Web page to a user using the GUI.