USC relies on single-sign-on service to authenticate access to its electronic systems. Duo Authentication is an extra layer of security, designed to protect personal information. USC requires that its faculty and staff use Duo two-factor authentication to log in, and this includes electronic subscriptions provided through the USC Libraries.
You need to sign in once during an 8-hour period and use the same browser session to access library resources.
For information bout Duo sign-on please check the web site for Information Technology Services.