9. An apparatus for controlling access to a secure area comprising: a respective user credential for each of a plurality of users seeking access to the secure area, the respective user credentials each having a corresponding bit value for each of a plurality of bit positions; a minimization processor that generates a single Boolean equation for the plurality of users based upon the corresponding bit values of each of the plurality of bit positions from each of the plurality of user credentials where the generated Boolean equation provides a predetermined response to each user credential of the plurality of credentials and only after receiving the user credential where the generated Boolean equation is saved in memory in place of the user credentials; and a card reader that recognizes a user credential of the plurality of user credentials by reference to the Boolean equation.
10. The apparatus for controlling access as in claim 9 wherein the minimization processor further comprises a Quine McCluskey minimization algorithm.