If you're wondering just how she pulls this off, there's a headset attached to her head with different receptors on different points. These then recognise different bits of brain activity, she's even got a 3D model of what her brain looks like, as well as the different parts of her brain she's using.
Initially, when she first started playing games with mind control, movement still had to be performed with a controller, but she later added gyroscope controls with her head movements to let her move around instead, making the entire setup completely hands-free.
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