WITHIN PHASE II OF THE WHISPER PROGRAM AS&T IMPLEMENTED AND VALIDATED A FULLY FUNCTIONAL DESIGN OF THE WHISPER SYSTEM. GIVEN THAT THE PHASE II PROGRAM WAS FOCUSED ON THE DEVELOPMENT AND VALIDATION OF A GENERALIZED IMPLEMENTATION, THE OVERALL DESIGN WAS FOCUSED ON FLEXIBLE DESIGN AND TESTING USING READILY AVAILABLE COTS COMPONENTS. SUCH A DESIGN WAS FOCUSED ON MODULARITY, USE OF PREEXISTING REFERENCE DESIGNS, AND EXTENSIVE USE OF TEST POINTS, AT THE RELATIVE COST OF SWAP-C. WITHIN THE PROPOSED PHASE II-X PROGRAM THE OPTIMAL CONFIGURATIONS OF SOFTWARE AND HARDWARE DEVELOPED IN PHASE II WILL BE OPTIMIZED FOR SWAP-C PARAMETERS WITHIN THE SPECIFIC AND OFTEN DISPARATE CONSTRAINTS OF NASA NEEDS AND COMMERCIAL MARKETS. WHILE THE PHASE II IMPLEMENTATION OF THE WHISPER SYSTEM IS FUNCTIONAL, THE TRUE ADVANTAGE OF THE TECHNOLOGY RESTS IN LARGE PART IN THE VERY SMALL SWAP-C CONSTRAINTS THAT MAY BE REALIZED BY THE REDESIGNS TO BE IMPLEMENTED IN PHASE II-X. BY REDUCING OAB DIMENSIONS TO A SMALL ASSEMBLY AND TAGS TO A SCALE COMPARABLE TO THAT OF CONVENTIONAL RFID TAG, IT IS POSSIBLE TO REALIZE BOTH THE VISION OF THE NASA AND COMMERCIAL IMPLEMENTATIONS DESIRED.