The need for special glasses and lack of 3 - D content are to blame. (canadianbusiness.com)
Once created, a hologram can be illuminated to create a pattern of light waves that replicates the light reflected by the original object, generating a 3D image without the need for special glasses. (newscientist.com)
To combat this, JLR have developed a 3D instrument cluster that used head - and eye - tracking to create a natural - looking 3D image on the instrument panel — much like you'd find on 3D TVs, but without the need for special glasses. (torquingcars.com)