Virtual IO (Stylized as Virtual i·O), also known as '''I-O Display Systems''', also known as Virtual IO (Stylized as Virtual i·O), was a company that made the [[I-Glasses]] virtual reality [[head mounted display]] with head trackings.<ref>1995 Virtual IO I-Glasses https://vrtifacts.com/1995-virtual-io-i-glasses/</ref><ref name=stanford>Virtual I/O's iglasses! Head Mounted Display https://graphics.stanford.edu/infrastructure/gamma-corrected/iglasses.html</ref>
The iglasses display two color video images with a resolution of 640x480 each.<ref name=stanford />
