If you desensitize the SSN, you are in effect granting near public access to a national database of all citizens, no? If you desensitize them, would it be an infringement on ones current rights if all state and local police and other law enforcement had access to a 3rd party collection of this national uniquely binding and certain form of id? Also, it would require a massive overhaul of credit dispersement, as well as the background check industry and many other systems. A much larger overhaul is required, if steps are not soon taken to formally regulate and monitor the storage and transfer of ssn's.