BigPatents India

A method for storing files in a memory space of retrievable authentication token of a mobile telecommunication device, each memorized file(10a, 20a, 30a,..., 50a) of the memory space comprising a file header (11a, 21a, 31a,... 51a) and a file body, each said file header (11a, 21a, 31a,..., 51a) comprising at least an indication as to access conditions to data stored in the file (10a, 20a, 30a,..., 50a), characterized in that at least one common storage area (100,200,300) is placed in the token in which access conditions (X, Y, Z) are memorized, a plurality of file headers (11a, 21a, 31a,..., 51a) storing a common index (x, y, z) which points to the access conditions of said at least one common storage area (100, 200, 300).