A Holoband is a device that allows its user to access and participate in the V-World. A device created by Daniel Graystone, they are apparently easy to hack, thus allowing programmers to set up rooms of illicit activity, collectively called V-Clubs. Produced by Graystone Industries, sales and licensing of V-World "rooms" made up sixty percent of GI's revenue. ("There is Another Sky")
The holobands were extremely difficult to open from their packaging, sometime requiring a hammer to successfully open the package.