Now, you can allow easy authentication for your users by enabling YubiKey security key as your users’ MFA device. You can enable a single YubiKey security key (manufactured by Yubico , a third party provider) for multiple IAM and root users across AWS accounts making it easier to manage your MFA devices for access to multiple users. You can also use your existing YubiKey, which you use to authenticate to other third-party applications such as GitHub or Dropbox, to sign in to the AWS Management Console .