You do have to log-in to share/connect to a remote desktop session. It seems to be utilising Google talk gadget (https://talkgadget.google.com/talkgadget/blank

You do have to log-in to share/connect to a remote desktop session. It seems to be utilising Google talk gadget (https://talkgadget.google.com/talkgadget/blank https://talkgadget.google.com/talkgadget/blank), this is probably why it requires a Google account.