Systems and methods realize the benefit of portable storage devices by taking advantage of PCs including an optical disk drive, optical disks, such as a CD or a DVD, and the Internet. An individual patient provides personal data to a healthcare service center. The healthcare service center can then create a portable optical disk for the patient to carry. The personal data written onto the portable optical disk is stored on a database management server database and is readable and updateable by the individual patient using his/her PC with an optical disk drive and connected to the Internet. The individual patient can choose to update his/her personal data on the portable optical disk and can receive a new portable optical disk that includes the update. The new portable optical disk containing the latest update is created and delivered to the patient by the database management server.