(אגב OTP ב RDP זה חרוז)
תודה רבה
http://www.rohos.com/support/knowledge-base/2-factor-authentication-for-remote-desktop-login-by-otp-sms/
https://www.duosecurity.com/product/applications/microsoft
http://www.multiotp.net/
https://code.google.com/p/multi-one-time-password--credential-provider/
https://www.telesign.com/resources/videos/telesign-push-verify-demo/