If someone has more than one twitter account .. can I tell which one they are logged in as?


I have OAuth working for sign in with twitter, and obviously I can cookie the visitor but …

If someone has multiple twitter accounts and when they come back they are signed in with another account … is there any way I can tell they are not currently using the account they authorized my app for?

I know I could of course display a greeting such as Welcome Back UserName and something like …
If you are not logged at twitter as UserName … Sign In With Twitter

Of course I could always make sure they have to sign in with twitter, even if they come back an hour later but I would rather not inconvenience anyone.

Is there any easy way to detect what a visitors current twitter account name or user id is when they visit your page.