2. A method as in claim 1 wherein the set of biometric assessment applications further includes (i) a set of physiological characteristic recognition applications to compare current physiological measurements of the user to expected physiological measurements stored in the mobile device and (ii) a set of behavioral characteristic recognition applications to compare current behavioral measurements of the user to expected behavioral measurements stored in the mobile device; and wherein the method further comprises: performing a discovery operation to identify which physiological measurements and behavioral measurements are capable of being captured by the mobile device to run only a subset of the set of biometric assessment applications on the mobile device.
3. A method as in claim 2 , further comprising: running different biometric assessment applications during different authentication attempts to alternate among the biometric assessment applications.