GrIDsure
The basic GrIDsure method is no more resistant to 'man in the middle' attacks than any other authentication system, but can easily be developed into a transaction-specific out of band solution that is highly resistant, whilst also offering all the other benefits of the GrIDsure method: a one time pass-code solution that is easily adopted by end-users and much more cost-effective than traditional password-based systems.
Biting the hand that feeds IT
