A radio network uses two sequences to identify a receiver of a message. The applicator element forms an angle with the rod and has an elastically deformable body andor core capable of deforming elastically to pass through the wiper member while the applicator is being withdrawn, the wiper member deforming substantially less than the applicator element while the applicator element is passing through the wiper member. In one embodiment, a plurality of current generators may be selectively operated to generate the desired additive output current that is needed for a particular operation such as reading or writing set or reset bits. The electrical connector of the present invention not only has high signal transmission rate and miniaturized structure, but also can be assembled quickly and accurately, thus it saves a lot of manpower and material resources, reduces the production cost and further improves the production efficiency. The second adjusting unit then adjusts a width of the first grayscale waveform according to a second predetermined value to generate a second grayscale waveform. Avoiding the use of a static session key during encryption offers several advantages over existing encryption methods.