Why we need OAuth

In order for Arrow to send automated responses on behalf of the Brand Twitter account, we must have an access token shared with us from the OAuth process.

Each program requires separate authorization via OAuth. Once you click on Sign in with Twitter button to open the Twitter OAuth window and authorize the app, a temporary access token will be shared between Arrow and the Brand account.

Arrow automatically destroys the access token five days after all brand authorized campaigns have ended.

For more information, check out Twitter's  About third-party applications and log in sessions  page.