Untethered Force Feedback is a system combining exoskeleton and EMS to elevate the interaction of the user with a VR or AR environment. The exoskeleton allows to apply force feedback on the hand whereas the EMS simulate the weight of an object when the user grabs it.
The exoskeleton is using wires to prevent fingers from going into a fist position. Furthermore, they are individually controlled by independent servo motors.
The EMS actuates the triceps, causing the user to lower its forearm.
The project was done as part of the senior engineering design project class (ECSE 456-457) at McGill University over a year long. The final report can be found here.