Abstract: A master control file enables application software to be ported between disparate operating systems of a computer without being updated by interfacing to portability enabling software, which interfaces with the disparate operating systems. Moreover, the application software includes medical software ported to a pocket device using the portability enabling software and the master control file.

Abstract: A method, apparatus, and computer readable medium transmits data between a client computer and a server in communication with each other, including compressing, privatizing and encrypting, by the client computer, the data including patient medical data of a patient into a file, and automatically generating and transmitting to the server by the client computer an electronic mail message having the file as a secure patient medical attachment to the electronic mail message, and automatically interrogating by the server a mailbox corresponding to the patient and residing on the server for an electronic mail message, and obtaining the patient medical data by the server by authenticating a user to the server and decompressing, deprivatizing and decrypting, the secure patient medical attachment upon receiving the electronic mail message with the secure patient medical attachment.