Changes
→Issues
* A cellphone, compatible tablet, or landline is '''mandatory''' to enrollment in 2FA
* U2F is exclusively supported in the Chrome and [[Chromium]] browsers, despite the presence of a [https://github.com/prefiks/u2f4moz functional plugin] which provides the feature in [[Firefox]]
** A workaround for Firefox has been posted [[Yubikey#Using_with_Virginia_Tech_2-Factor_(Duo login page is actually '''broken''' by use of this plugin)|here]].
* [https://duo.com/legal/privacy Privacy policy] is a joke, and implies almost no level of customer or customer data protection
* Use of app isn't ''real'' 2 factor authentication, as it doesn't require the person initiating login to posses device