Halo’s multi-factor authentication is an effective security control customers can implement to prevent account takeover and data theft. This additional layer of security requires a physical device - either a mobile phone or Yubikey - to serve as second factor. We strongly urge Site Administrators to configure backup methods when using MFA.
Without backup, it’s possible for the site admin to lock himself out of the portal account.
To order a Yubikey for backup purposes, visit Yubico's website.