CAMBRIDGE, Massachusetts, July 10 -- The Massachusetts Institute of Technology issued the following news: * * * Walk-through screening system enhances security at airports nationwide * A new security screener that people can simply walk past may soon be coming to an airport near you. Last year, U.S. airports nationwide began adopting HEXWAVE -- a commercialized walkthrough security screening system based on microwave imaging technology developed at MIT Lincoln Laboratory -- to satisfy a new   more