RIGs monitor the lifesigns of an individual. Developed from medical monitoring systems designed for elderly patients, it has found common usage among the adult population. All RIGs share several basic features. A spine-mounted display serves to indicate the user's general state of health as a glowing segmented bar which depletes as the user takes damage. When the user dies, it emits a "flat-line" sound similar to an EKG, which is loud enough to alert others within earshot of the RIG wearer's demise. Holographic projectors mounted on the wrists can create a two-dimensional display in front of the user, to display whatever they might need to see. The size of the display can vary depending upon the data it is accessing. It can also project a colored line to guide the user to a destination, be