[[CVBruce wrote: The keyboard is a big problem.]]
Yes it is, until you use x11vnc -xkb which translates the computer keyboard normally (digit keys).

In another post I posted this URL
http://www.karlrunge.com/x11vnc/x11vnc_opts.html

It shows many options how to use X11vnc, I made a shell script with

#!/bin/sh
x11vnc -http -xkb -ultrafilexfer -forever -passwd [mypassword]

which allows browser access on default port 5800 (beside VNC viewer port 5900), extended keyboard (pressing numbers on the computer keyboard result in numbers rather than letters), file transfer enabled when using UltraVNC (a similar option exists for TightVNC), remains in memory (x11vnc does not unload when you terminate the session) and a password.
This is just an example.

The only keys for which I have no translation are the buttons on the edge on the n810 (zoom, full screen keys).