The Personal Health Assistant allows doctors to continually monitor high-risk patients. Patients wear a plaster—a bandage embedded with three electrodes—that measures vital data. The data is transmitted to a recorder device via a new technology called Skinplex, which enables the human body to send digital data files over the skin. The recorder device interfaces with a cell-phone-like component to give patients access to their information and synchronize the data with an external server so doctors can optimize treatment. The plaster can be placed almost anywhere on the body, and only needs to be changed every two weeks. The unobtrusive design of the system frees patients to go about their daily life without worrying about their health.