I have always known about physical security keys, also called hard tokens, but never actually used one despite my curiosity. So, I was kind of excited when I got my hands on two cool things: a YubiKey 5 and a Google Titan security key.
Now that I have two kinds of security keys, I tested both on some platforms people use regularly to see what the fuss is about.
A quick intro to security keys: A security key can work in place of other forms of two-factor authentication such as receiving a code through SMS or pressing a button in an authentication app. Most keys are about the size of a thumb drive and can either be used by plugging into a computer or, in some cases, communicating over NFC (Near Field Communication) with a mobile device.
