Sensory feedback is also an advancing
area in VR technology. Haptic feedback (vibration) has long been used
in game controllers, but research is being done to develop
micro-pneumatic technology. New fabrics have been developed for
gloves that are thin and bendable, with tiny air pipes in imbedded in
the surface. These air pipes terminate in small, inflatable circles
which are essentially tiny, “haptic pixels” that are just a few
millimeters across. Programs determine which pixels activate,
creating convincing sensations of movement and pressure. The gloves
are also capable of force feedback, able to restrict the movement of
your fingers to simulate holding objects. This occurs when stoppers
are inflated along the joints of your fingers to restrict further
movement, so reaching out and grabbing an object feels real when your
fingers stop where they should (in reality) when coming into contact
with a virtual object.
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