Traditional VR controllers like the Oculus Touch or the VIVE controllers allow the user to interact with virtual content by pressing buttons and pulling triggers.
This concept of controllers is really a legacy of 2D interaction and useful to simulate a tool (a racket, a weapon, a brush...) that you hold in your hand, but it can never give you the versatility of your hands and especially fingers. With its different buttons it is counter-intuitive to use for most and hampers the immersion of VR.
A realistic representation of and interaction with your hands and fingers enhances the sense of presence and makes the simulation much more intuitive. VRfree® offers exactly that - the ability to interact with VR/AR just like in the real world.