Better yet, directional li-fi through transparent panels on your devices guided by compact adjustable optics.<p>Example of what tech such optics could use:<p>Solid-state variable optics: <a href="https:&#x2F;&#x2F;www.osapublishing.org&#x2F;oe&#x2F;abstract.cfm?uri=oe-18-13-13981" rel="nofollow">https:&#x2F;&#x2F;www.osapublishing.org&#x2F;oe&#x2F;abstract.cfm?uri=oe-18-13-1...</a><p>Compact non-conical optics: <a href="http:&#x2F;&#x2F;www.nasa.gov&#x2F;feature&#x2F;goddard&#x2F;out-with-the-old-in-with-the-new-telescope-mirrors-get-new-shape&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.nasa.gov&#x2F;feature&#x2F;goddard&#x2F;out-with-the-old-in-with...</a>