An information processing apparatus of this invention can accommodate a portable device in a detachable way, and can detect accommodation/removal of the portable device, and can read ID information transmitted from the portable device. Therefore, according to this invention, for example, making feasible...http://www.google.ca/patents/US20020169001?utm_source=gb-gplus-sharePatent US20020169001 - PORTABLE DEVICE, INFORMATION PROCESSING APPARATUS AND METHOD FOR COMMUNICATING BETWEEN THOSE
