Twitter's access tokens are not opaque

Referring to this old april 2009 thread at twitter-dev; I am开发者_开发问答 currently extracting the twitterid from the access token. The thread says that twitter will soon move to provide the twitterid & screenname to the callback url directly but as of today, that is still not the case. Are you still extracting the twitterid from the access token ? Is there another more future-proof way to get the twitterid/screenname given that you have the access token ?

Once you have access token, why not call verify credentials method which would give you the user's detailed information?