Twitter said Wednesday that accounts protected with a hardware security key can now log in from their iPhone or Android device. The social media giant rolled out support for hardware security keys in 2018, allowing users to add a physical security barrier to their accounts in place of other two-factor authentication options, like a text message or a code generated from an app. Security keys are small enough to fit on a keyring but make certain kinds of account hacks near impossible by requiring a user to plug in the…
