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Two-Step Login

Get an overview of two-step login on this page, and find links to knowledge base articles in the left-hand column for specific instructions and guides.

New UC San Diego Students and Employees

Start here: Register your phone or other device. For more information and tutorials keep reading.

Existing Users: Quick Help

Locked Out or Device Unavailable

Get help if you're locked out of Duo or your device is not available.

New Phone (with Same Number)

Register a new or upgraded phone with the same number

The Basics

Learn how to use Duo Security to manage the two-step login process.

Step 1:

Log in as usual

Step 2:

Verify your identity



Get started in 3 easy steps:

  1. Decide which device(s) you'll use
  2. Install the Duo app on your device, or request a token
  3. Register your device with Duo (



See how easy it is to register a device:



Student employees:

You may already be using Duo and two-step login if you're also a university employee and are accessing protected systems. If you have separate student and employee accounts, you may need to register each account for two-step login. Learn more about Duo.

More information and details: