That's managed by Twitter's cookies. If the user is already logged in,
Twitter can recognise it during the OAuth approval process.

On Thu, Nov 12, 2009 at 11:18 PM, Cristiano Barros <> wrote:

> Hi, I'd like to know if it's possible (and how) to authenticate users
> in an application using OAuth and get them already logged in on
> Twitter. That happens when logging to after logging to
> stocktwits using OAuth, user is already logged on Twitter. How do they
> do it? Thanks in advance.

Harshad RJ

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