Yep that's possible, done it in the past.

What you're viewing there seems to be the source for documentation.
Maybe have a look here:
http://harmattan-dev.nokia.com/docs/...dW50c2V0dXA%3D

Yeah, sure plugin-guide.html is missing. What else....GNNN

Ok...the test class can be used for further reference:
http://gitorious.org/accounts-sso/li...tests/test.cpp

*gathering resources*
http://www.developer.nokia.com/Commu...n-in-Harmattan

I think I should be able to do something using the last link.
Shouldn't be more than distributing the xml files, adding dependencies and writing a binary account handler.
Hope I'll find some time today / weekend to get started