You can create a 3D effect without needing special glasses. All you have to do is track where the user is looking and render the scene accordingly. You can now try it out the technique on an iPhone or iPad.
When you think about ways of creating a 3D display then you can't help but start to invent hardware to do the job - in particular special glasses that send different images to the left and right eye. In fact you can do much of the same job with just some clever software.
A team of researchers, the Engineering Human-Computer Interaction (EHCI) Research Group has built on earlier work that showed 3D images either using accelerometers (Holotoy) or a Wii remote to track the orientation.
The idea is that by working out the users view point the display can be modified to show what they should see from that position. Looking at the screen then becomes more like looking through a window into another world. Objects in the other world seem to be 3D because they move relative to each other as the viewer's position changes.
Read more: I Programmer