To use a security key with Duo, you must have: a supported browser an available USB port a Security Key When you first register a Security Key, you may see a browser-specific dialog screen asking you ...

After inputting your login information, Duo requires you to complete a method of second-factor authentication. This could be a push notification to a smartphone app that you have to approve, inserting ...

The product I used was the PNY DUO LINK iOS USB 3.2 dual flash drive. It looks like a regular USB thumb drive but has a connector at each end. One of the connectors is a classic USB A, while the ...