A head-worn, computer device with a transparent display can be used to mitigate the effects of motion sickness (and spatial disorientation) if visual indicators of the wearer’s head position are shown. Such a device functions by providing the wearer with digital reference lines in their field of vision that indicate the horizon’s position relative to the user’s head. This is accomplished by combining readings from accelerometers and gyroscopes mounted in the device. This technology has been implemented in both standalone devices and Google Glass. In two NIH-backed studies, greater than 90% of people experienced a reduction in the symptoms of motion sickness while using this technology. One promising looking treatment is for to wear LCD shutter glasses that create a stroboscopic vision of 4 Hz with a dwell of 10 milliseconds.