Different types of tracking systems detailed here: https://www.vrs.org.uk/virtual-reality-gear/tracking.html
Each has upsides and downsides, though low latency is arguably the most important part of getting that feeling of being "there" right.
Study by Slater et all: http://wwwx.cs.unc.edu/Research/eve/walk_exp
There are also efforts to make 3d mobile phones like this one where you can see 3D without any glasses (https://www.youtube.com/watch?v=OCE8ljMhFK8)
Here's a nice brief history about VR: https://www.vrs.org.uk/virtual-reality/history.html
Different types of tracking systems detailed here: https://www.vrs.org.uk/virtual-reality-gear/tracking.html
Each has upsides and downsides, though low latency is arguably the most important part of getting that feeling of being "there" right.
Study by Slater et all: http://wwwx.cs.unc.edu/Research/eve/walk_exp
There are also efforts to make 3d mobile phones like this one where you can see 3D without any glasses (https://www.youtube.com/watch?v=OCE8ljMhFK8)
Here's a nice brief history about VR: https://www.vrs.org.uk/virtual-reality/history.html