Dynamic interference estimation in secure gate system using intra-body communication

This paper describes the estimation of the interference problem during intra-body communication through experiments involving two people walking. The interference problem was examined by changing the distance between the two people. There was an interference signal under a static condition in which the two people were standing at a typical distance from each other in usual situation, but interference did not occur under the dynamic condition in which they were walking at the same distance. We confirmed that an incorrect authentication pattern was not observed, except for an extremely rare situation. We found that the transceiver used in the experiments is a highly robust against the interference problem in secure gate systems such as those involving railway ticket gates.