We require a prototype piece of software that can demo a example of 2 factor authentication. This needs to be performed using the industry standard manner rather than a simple approach just as a login script. An example of software commercially available that does this is ESET Secure authentication. As we require a customised solution, we are not able to implement their product.
We dont require an sms, or mobile app as part of the prototype rather than just the option to manually modify the 2FA code to prove it works.