You would need the following
1) Custom shopaccount handler
2) Custom user content class 3) Custom shop module extension (for the custom user/register view)
There are some examples scattered around the community now of these dependencies.
eZ Authorize (svn trunk branch) has some supporting examples which are dependent on these custom features and provides an example custom shop account handler as a reference (re: #1).
eZ Authorize's example shopaccount handler (re: #1) is a start but ...
At some point it would be more useful however to have an example implementation / project available which we could point to as direct example this is true.
Still these are fairly simple to create (re: #2 / #3) with the right application of determination and programing.
Perhaps in the future we will have an opportunity to use http://projects.ez.no to offer these dependencies as ready to use out of the box extensions? Your support is most welcome ;)
<i>//kracker
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