I would really like to see lardman's camera-based barcode scanner working! It seems to me that the most important part is getting the translation of barcode to ASCII working. If you can get that ASCII code, you could use something like pipeline's DBus Switchboard to send the code as a parameter to user-defined applications.

And yes, as far as I am aware, getting this working on the N810 will mean it will work on the N800 too.