Now for a moment be amazed by the wonder of the difference between the archaic ideas about universe hoppers from the extensive Science Fiction literature and the simplicity of the everyday universe hoppers. There are other hopping devices which are not machines. Strictly seen, these fall outside the course of this article. These jumping devices are optical in nature and they refract light. They are called spectacles.
Spectacles are completely velocity unrelated.
However, the number of alternate universes you can be in can be doubled with them. There are also more fine tuned, miniaturized devices that work on this same principle. These are called contact lenses, but they are more complex and difficult to handle and maintain, as is most of the most modern, state of the art technology. This jumping between universes has a certain pattern. A high velocity universe is commonly used to translate fast in the Zero-universe.