>>289044660
It's just a proof of concept for another method of delivering haptic feedback, one they suggest may be better than vibration motors for certain simulated stimuli. These things either resurge when manufacturing/materials advancements allow them to miniaturize/become cheap or they remain a proof of concept for something that is never sufficiently needed.

At least they didn't go as far as that company who made the VR glove covered in air bubbles that needs a giant air compressor wheeled around with it.