Hugh Pickens writes writes "Farhad Manjoo writes that there are a number of technologies that gunmakers could add to their products that might prevent hundreds or thousands of deaths per year. One area of active research is known as the 'smart gun' — a trigger-identification system that prevents a gun from being fired by anyone other than its authorized user. Researchers at New Jersey Institute of Technology created a working prototype of a gun that determines whether or not to fire based on a user's 'grip pattern.' Gunmakers have been slow to add other safety technologies as well, including indicators that show whether a gun is loaded, and 'magazine safeties' that prevent weapons from being fired when their ammunition magazine is removed (PDF). That could save 400 lives a year. So why aren't gunmakers making safer guns? Because guns are exempt from most of the consumer safety laws that have improved the rest of American life. The Consumer Product Safety Commission, charged with looking over thousands of different kinds of products, is explicitly prohibited from regulating firearms. In 2005, Congress passed and President George W. Bush signed the Protection of Lawful Commerce in Arms Act, which immunizes gun makers against lawsuits resulting from 'misuse' of the products. If they can't be sued and can't be regulated, gunmakers have no incentive to make smarter guns." Note that gun safety features (not universally loved) like loaded-chamber indicators, grip safeties, and magazine disconnects are constantly evolving and have been available in some form and in various combinations for many decades, so gun makers seem to have some incentive to produce and improve them, and that the PLCAA does not prevent consumer safety lawsuits, but does shield gun makers from suits based on criminal conduct by gun buyers (though imperfectly).