A system for hygienic input of data into a medical information system is provided. In one embodiment of the system, a computer terminal, a mobile wireless input tray, a mobile wireless interactive visual display system, and a wireless headset are used. During a medical procedure, the mobile input tray, the mobile display system, and the wireless headset may be positioned in an operating room near a surgeon or other medical practitioner. The mobile input tray, the mobile display system, and the wireless headset may be used to access patient medical information through the computer terminal. The mobile input tray, the mobile display system, and the wireless headset communicate amongst and between each other through wireless communication links. The mobile input tray, the mobile display system, and the wireless headset communicate with the computer terminal through wireless communication links.