Online Carry Training has all of the information you need about firearms. Visit http://www.onlinecarrytraining.com/blog/the-science-behind-smart-guns/ to learn more. Several states are pushing for legislation, which would require all new guns manufactured in the United States to be smart guns. These can be RFID or biometric based guns that will not fire unless certain conditions are met. Firearms are moving into a new advent of technology.