text_1: 20 percent of the time (smart guns) won't work.
text_2: "Pratt said ""20 percent of the time (smart guns) won't work,"" which he got from a 2003 magazine story referencing unpublished research from the New Jersey Institute of Technology. The scientists who conducted that research say Pratt’s citation is misapplied. Researchers only looked at smart guns that rely on fingerprint sensors, yet Pratt applied the statistic to all smart guns, including the Armatix pistol that works with a black stopwatch, PIN code and small electronic chips. Even more, their research is more than a decade old, and they say fingerprint matching technology has changed since then. Pratt’s statement is not based on solid evidence."