Is there any ETA you can give regarding implementation of 2FA? 2FA is a must have in todays IT Infrastructure and Security. I'm pretty sure that MOST of the users would love to see any solution here. Especialy for usage with the mobile App. For Administrators its a blessing to have the possibility to pause or ack... a sensor on the go.
Something to start with >>> https://tools.ietf.org/html/rfc6238
Have a nice weekend.