Brain-computer interface technology has attracted investment from billionaires. Paradromics hopes to develop BCI to aide disabled and non-verbal patients with communication.

AUSTIN, TX - FEBRUARY 10: Aamir Ahmed Khan, PhD, Principal Electrical Engineer for Paradromics, works on the Transceiver which connects to the brain implants. The device is wirelessly powered and does not have a battery to charge. Information from the cortical implants is transferred via infrared contact between the two parts of the transceiver. Austin based Paradromics is developing a brain-computer interface to aide disabled and non-verbal patients with communication. Their device builds on the Blackrock Technologys original Utah Array by replacing 100 hard silicon bristles with 400 platinum iridium bristles which provide a better signal and a longer lifespan than previous materials. Paradromics manufactures some of their parts at their facility in Austin, Texas and merges them with other readily available parts from medical device manufacturers. The current device is being tested in sheep. (Photo by Julia Robinson for The Washington Post via Getty Images)