https://www.vice.com/en/article/dy7kbq/palmer-luckey-made-a-vr-headset-that-kills-the-user-if-they-die-in-the-game
“The good news is that we are halfway to making a true NerveGear. The bad news is that so far, I have only figured out the half that kills you,”
That's actually a misconception. Graphite dust is conductive and in zero g it can float around and potentially short something. So a space pen is not useless