Digital data storage apparatus (10) comprises attachment means (18) to removably attach the apparatus directly to the human body, storage means (34, 36) for storing data, and communication means (14, 16) for transferring data into and out of the apparatus (10). The apparatus is characterized in that...http://www.google.ca/patents/US20030075597?utm_source=gb-gplus-sharePatent US20030075597 - Digital data storage apparatus