An electronic system for identifying an article can include a printed memory having a plurality of contact pads electrically coupled to a plurality of landing pads positioned on a first side of a printed circuit board (PCB) substrate. The plurality of landing pads can be electrically coupled to a plurality of endless, concentric contact lines positioned on a second side of the PCB substrate through a plurality of vias that extend through a thickness of the PCB substrate and a plurality of traces that electrically couple the plurality of vias with the plurality of landing pads. To perform a memory operation on the printed memory, contact probes of a reader are physically and electrically contacted with the plurality of concentric contact lines. In some implementations, the memory operation can be performed on the printed memory irrespective of a rotational orientation of the printed memory relative to the reader.