A high density memory card assembly having application for USB drive storage, flash and ROM memory cards, and similar memory card formats. Each of the heat dissipation units includes a main portion, a head portion, and a neck portion interconnecting the main portion and the head portion. In this regard, for each central cell, a super-cell may configured, comprising the central cell and at least a part of one or more cells adjacent to the central cell, with antennas of the super-cell comprising one or more antennas of the one or more adjacent cells. Additionally, in a barcode with redundant information, the amount of redundant information may be reduced in the displayed barcode.