I've been experimenting with xmldap's Identity Selector yesterday. My intentions was to find an identity selector that works on Linux platform. I had several hiccups. First of all you need a new version of firefox. Eventhough the identity selector pops up properly I am unable to send a card.
The impression I got was that it is still under early development stages.
It can be downloaded from here
I am sure it will be a really cool software in the future. Let's just wait and see.