Home-based and consumer medical devices have traditionally been used for testing and monitoring. Examples of these devices include digital blood pressure meters, blood gas meters, and blood glucose meters. Today, medical devices are expected to do much more than just testing and monitoring. Some are now capable of logging and analyzing data as well as communicating accurate results to the health provider. Blood pressure meters are now benefiting from a more extensive data logging feature as well as communication ports for real-time sharing of information with the health provider. Insulin meters are now equipped with communication ports (IR/wireless) to transfer real-time measurement to the PC or to the insulin pump to effectively treat the disease. In the most basic form, portable medical devices are all battery-operated, microcontrolled handheld devices that take and analyze measurements using various bio-sensors that are used in a patient’s treatment plan.