Better yet, directional li-fi through transparent panels on your devices guided by compact adjustable optics. Example of what tech such optics could use: Soli

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