Unfortunately, there’s no clever tech fix for the Vive’s heavy PC tether, which snakes out from the back of your neck like a dog leash.
I never actually tripped on it, but it was hard to forget about it.

Being free to roam deepens the sense of presence, while worry about a cable tends to disrupt the spell.

Cables are going to be a major obstacle in the VR industry for a long time. Mobile VR will be successful long before PC VR goes wireless.