Abstract: A system for identifying a person includes at least one biometric sensor for sensing a biometric characteristic of the person; at least one signal sensor for sensing a signal emitted from a device carried by the person; and a computing device for comparing the sensed biometric characteristic and the sensed signal to known characteristics of the person in an attempt to identify the person.

Abstract: A system for solving large-scale matrix equations comprises a plurality of field programmable gate arrays (FPGAs), a plurality of memory elements, a plurality of memory element controllers, and a plurality of processing elements. The FPGAs may include a plurality of configurable logic elements and a plurality of configurable storage elements. The memory elements may be accessible by the FPGAs and may store a matrix and a first vector. The memory element controllers may be formed from configurable logic elements and configurable storage elements and may supply at least a portion of a row of the matrix and at least a portion of the first vector. Each processing element may receive at least the row of the matrix and the first vector and solve an iteration for one element of the first vector.