Shameless plug for http://duosecurity.com http://duosecurity.com We offer a two-factor cloud service to protect any kind of service that may be remotely access

Shameless plug for http://duosecurity.com http://duosecurity.com We offer a two-factor cloud service to protect any kind of service that may be remotely accessed: web, ssh, rdp, vpn, ... Biggest difference from Google Authenticator is the smart phone user experience: one tap to approve a login instead of transcribing a six digit OTP.