Abstract: File system for IC CARD comprising an integrated circuit IC, non volatile memories ROM and/or E2PROM and at least a volatile memory RAM, for organizing files storage inside the non volatile memories and defining, through a logical structure, their accessibility by an IC Card application, stored inside one of said non volatile memories or IC or loaded in the volatile memory and in communication with an external read-write device; an interchange application, stored inside one of said non volatile memories, drives the organization of files in an additional tag-length logic structures of arbitrary length, allowing the identification of files through alphanumeric identifiers of arbitrary length and extension, and their accessibility by an external read-write device, eventually non IC card purpose, like a workstation a personal computer or a PDA interconnected to the IC Card by means of standard communication interface.

Abstract: An electronic device includes an integrated circuit linked to a coil antenna forming at least a spiral having opposite ends connected to the integrated circuit, and a plate support for supporting the integrated circuit and the coil antenna. The plate support is conductive and open ring shaped, wherein the internal circumference of the ring is concentric to the spiral. The opening of the ring is obtained by a cut through the plate support. The coil antenna is fastened to and isolated from the plate support through an insulating material. The cut and the plate support are filled by the same insulating material.