Communication apparatus, program, communication method and communication system

摘要

A communication apparatus (10) including a first communication unit for communicating with other communication apparatus (20) through electric field coupling or magnetic field coupling, an approach detection unit (114) for detecting an approach between the other communication apparatus (20) and the first communication unit, and a selection unit (134) for, when the other communication apparatus and the first communication unit are separated from each other, selecting different data to be transmitted depending on a time for which the other communication apparatus and the first communication unit were in close proximity to each other.