Harvard uses DUO Security to provide two-step verification on HarvardKey.
Recommended set up: Smartphone (primary device) & landline (back-up device)
Using a mobile phone with Duo Mobile push is recommended for the best experience. Please review all these instructions before beginning the process.
You will need to install the Duo Mobile application on your device, which can be downloaded from your platform's app store (Apple Store, Google Play, Windows Store).