An iron type golf club head includes a plurality of weights mounted at a rear side thereof in a spatially laminated array. MAC spoofing may result in packets directed to one subscriber device being sent instead to another subscriber device. The latter feature implies that for every inorganic layer that is being etched during a specific etch step, the corresponding pattern transfer layer in the field is organic and vice-versa. The D2D communication channel is established in a licensed radio frequency band and is managed by the WWAN. Afterwards, all the weights are added up to give a weighted statistical value, which eventually is used to separate the graph data from the text data.