6. The method of controlling access as in claim 5 wherein the step of generating the Boolean equation further comprises using the plurality of user credentials to generate the Boolean equation and, otherwise, using the unused credentials to generate the Boolean equation when the unused credentials have a smaller relative number.
7. The method of controlling access as in claim 6 wherein the step of generating the Boolean equation further comprises defining a set of variables within the Boolean equation where each variable of the set of variables corresponds to a character of the sequence of apha-numeric characters.