The effects of PS/2 keyboard setup on a conductive table on electromagnetic information leakages

Recently, it has been shown that electromagnetic emissions from information communication devices emanate internal information. A number of studies have been conducted on measurement methods for information leakage, countermeasure technologies, and the propagation mechanism and acquisition of information via electromagnetic radiation. Some investigations have shown that information leaks through radiated emissions. However, there has been little discussion about the effect of setup environments of information communication devices on information leakages. In this paper, we focus on the distances between a conductive table and the equipment. We focus on distances between a keyboard and a conductive table on EM information leakage and investigate the effects of the setup environment on information leakage via EM fields.