Here is an exoskeleton hand that can be controlled via brain, allowing quadriplegics to live in a more independent fashion. This robotic hand allows people with spinal cord injuries to write with a pen, eat, use credit cards, and do a whole lot more.
As you can see in this video, an elastic cap with electrodes was put on the heads of participants. The cap receives electric patterns from the brain and sends them to a control box for actuation. According to RT, it took only a few minutes for participants to learn how to use the device. Such a solution helps quadriplegics and people with other mobility issues live more independently.