High Fidelity is Philip Rosedale’s new virtual world project. This is currently in the very early stages of Alpha but you can signup to that Alpha from the main webpage. However you won’t be able to login to High Fidelity or see any of its features.
However it does seem as if it is possible to login to High Fidelity. There are clues on how to do this, starting from the jobs page. There a challenge is laid down to people who may want to do paid work for High Fidelity:
“We are seeing lots of great applicants! If you’d like to get our attention and also have more fun than sitting in an interview, do the following:
Checkout our code on GitHub, build the Interface client, and see if you can login to Hifi. Then, take a look at Worklist and see if there’s a job you can do to show us your work skills.”
Obviously this isn’t going to be for the faint hearted, or at this moment in time, Windows users. The GitHub link provides further information on the ingredients for building an interface for you to login to High Fidelity. The ingredients include CMake, building in XCode, QT5.1 and OSX or Ubuntu. High Fidelity has so far been successfully built to run on OSX 10.8, Ubuntu and some other modern Linux distributions