Taylor - Unfortunately at this time, we do not support two-factor authentication. I believe there is an existing idea on this forum, it would be beneficial to vote up. I know internally this has been a long standing feature request. Hopefully we'll get it soon.
Done! With all the issues around compromised passwords and the nature of the Hive Manager and device service (business critical in most cases), this should be a top priority. Just last year, Verizon research into data breaches indicated 80% of data breaches would have been stopped or forced to change tactics if a "suitable replacement" (such as multifactor authentication) to passwords had been used.(http://www.darkreading.com/attacks-breaches/the-eight-most-common-causes-of-data-breaches/d/d-id/113...?). I cannot emphasize how important this feature is to protecting customers and avoiding a tremendously embarrassing incident.
Not having it on the user-facing product also makes me question whether Aerohive is using this and other best-practices in securing its administrative and back-end infrastructure that powers the service itself. If not, it's a dangerous road to be traveling for Aerohive.