2 factor authentication on SharePoint 2013

Hi,

For a client we have to design application with 2 factor authentication on SharePoint 2013.

I have few questions here:-

1.      Is 2 factor authentication is possible only with SharePoint 2013 cloud or it is possible even with SharePoint 2013 on-premise also?
2.      Client is already using RSA secure ID for other application (Non SharePoint).
   1.       IS RSA dependable for SharePoint application also?
   2.      What other tokens working well with SharePoint 2013?
3.      What are the steps to design 2 factor authentications in SharePoint 2013?

Pl reply only if you have real life experience. Don’t share link. It is urgent.

Thanks in advance.