A method of accessing local applications when roaming on a NFC mobile device may include creating a first partition and a second partition on a secure element of a subscriber identification module of a near field communication enabled device. The protrusions are arranged such that when the members are moved toward one another, the protrusions of one pad interdigitate with the protrusions of the other pad. Through selecting corresponding diffractive optical element and appropriate adjustment, this invention can generate various illumination modes including single ring illumination mode and double ring illumination mode. This not only keeps the outermost container from falling away from the dispenser but also retains the nested stack in the dispenser. Messages corresponding to individual copies of the graph are stored in a memory and accessed in sets, one from each copy of the graph, using a SIMD read or write instruction.