Question

Does anyone have any pointers for implementing the following:

I want to cheaply enable multi-factor authentication on an asp.net website. I want people to be able to use an app on their phone (iPhone at the very least) to generate the token used alongside their username/password to login to the site.

I do not want the people to have to carry a third-party device/fob to generate the token.

thanks, Andrew

Answer 1

I’ve finally solved my problem by making use of the Google Authenticator and a slight modification of this: http://code.google.com/p/g-authenticator-wp7/