Most controllers for VR-environments focus mainly on motion tracking. Inside such an environment the user is likely to perform certain actions (mostly by hand), and wishes the environment to act upon these interactions. There are already multiple tracking systems available or in development (e.g. through crowd-sourcing platforms like Kickstarter). Here is a list of described sets:

• https://www.neurodigital.es/
• https://manus-vr.com/
• https://www.youtube.com/watch?v=1ziu_iad5Es
• https://techcrunch.com/2017/02/09/oculus-gloves/
• http://www.virtuix.com/

More information about the Hands Omni and Gloveone can be read here: http://www.roadtovr.com/2-vr-gloves-promising-haptic-feedback-2-different-approaches/

picture property of: Manus VR