The NY Times: http://www.nytimes.com/2012/06/13/us...te.html?ref=us
has an article which seems to promote this technique. There is mention that the opposition cites expense and that it won't work. Major gun rights organization opposed it as would be expected. Interestingly, Remington would pull out of NY if passed in the current session but Cuomo thinks it unlikely.
Of course, Mayor Bloomers is for it. I propose microstamping all the big Gulps and preserving the containers for future lawsuites against pop companies when you drop dead from being fat. That makes sense too!
Big city mayors in the usual states are in favor. Unfortunately, gun crime is due to socio-economic conditions for the most part and after the fact solving of gun related crimes (if it worked) will do little to stem the murder rates.