The same account names are used for a lot of different GNOME services. Account names serve an important role in identifying the people contributing to various GNOME projects. All those projects use the same services and name space, and this is why there are some important requirements on account names.

Account Name Requirements

1. The account name needs to be only lowercase letters a-z
2. The account name should also be easily connectable to the full name. This means that the name should be a combination of your first, last, and possibly middle names, or abbreviations or initials of such.