Patent ID: 7395972

Claim:
An electronic data carrier for contactless transmission of data with a base station, the electronic data carrier comprising: a first page and a second page; a connection axis between the first page and the second page, wherein the first page and the second page can be folded apart at the connection axis in an opened state and folded toward one another at the connection axis in a closed state; an electrical circuit to store the data; a coupling element coupled to the electrical circuit, the coupling element comprising a capacitive element to facilitate the contactless transmission between the electronic data carrier and the base station, wherein the coupling element is at least partially embedded into or integrated with each of the first and second pages, wherein the coupling element is configured to facilitate the contactless transmission with the base station essentially only in one state of the opened state and the closed state; wherein the capacitive element comprises: a first plate embedded in the first page; and a second plate embedded in the second page; wherein in the opened position the capacitive element assumes a full area on the electronic data carrier to enable access by the base station; wherein in the closed position the first and second plate of the capacitive element are substantially aligned to disable access by the base station.