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As part of the Defense Advanced Research Project Agency’s (DARPA) new priority program for breakthrough technology in medicine, a mind-controlled prosthetic arm may be on the market in a few years. Seriously crazy. Just check out the video above and read the details below:

The arm, which was developed at a cost of over $100 million by DARPA and Johns Hopkins University over the past five years, is controlled by a microchip in the brain. The microchip records neuron activity and decodes the signals to activate motor neurons that control the prosthetic.

DARPA’s prosthetic works much like a regular arm, with the ability to bend, rotate, and twist in 27 different ways. It is designed to restore almost complete hand and finger function to patients dealing with spinal cord injury, stroke, or amputation.

Now that the arm has been expedited through the FDA’s program, Johns Hopkins will implant its microchips in five patients and monitor them for a year. There are few safety concerns, but the university anticipates issues with maintaining chip quality over time, according to the Los Angeles Times. If all goes well, the arm could be on the market in just four to five years.

We’re almost scared. Didn’t anyone see Matrix 2: Neo Returns? Machines will be our downfall.