** Please note that due to the acquisition of Toopher by Salesforce, new users are no longer being accepted to use this feature. Current users can continue to use this feature as long as Salesforce continues to support it.
LastPass supports multifactor authentication with Toopher. It is a secure, two-factor authentication application offered for all leading smartphone platforms, including Android, iPhone, and Windows Phone. You can get Toopher here: https://www.toopher.com/
Setting Up LastPass with Toopher
Administrating Toopher in Enterprise