From the XFree-Local-multi-user-HOWTO (http://www.tldp.org):
You can have multiple independent graphic cards and
multiple independent mouses, but in order for multiple users to
interact with the system, they do need independent keyboards as well.
Multiple independent keyboards is the feature that linux-2.4 (and in
the future linux-2.6) lacks, and this is what Backstreet Ruby adds to
the stable Linux kernel linux-2.4.
I wonder if that means I can get keyboard-specific maps…