The present invention relates to a printing element having at least one polymer layer which has photoimageable constituents and a chemically functionalized polymer to make the polymer layer either more hydrophobic or hydrophilic. Given the spatial limitations the unit must have elongated shape. Further, the method includes generating precoding matrices comprising bg, p1, p2, and p3 bit groups, wherein each of the precoding matrices are generated by quantization using at least the gain information and the relative-phase information between antenna elements. Commercial participant branding is maintained, and entry of consumer information is minimized and simplified.