"I think that one of the things that we learned when we were trying to get passed those common sense reforms last year, Vice President Biden and I had a meeting with a group of technology people and we talked about how guns can be made more safe," he said.  "By making them either through finger print identification, the gun talks to a bracelet or something that you might wear, how guns can be used only by the person who is lawfully in possession of the weapon." 

"It's those kinds of things that I think we want to try to explore so that we can make sure that people have the ability to enjoy their Second Amendment rights, but at the same time decreasing the misuse of weapons that lead to the kinds of things that we see on a daily basis," Holder said. 

The Justice Department has requested $382.1 million in increased spending for its fiscal year 2014 budget for "gun safety." 

Barack Obama’s budget proposal also calls for $1.1 billion to “protect Americans from gun violence—including $182 million to support the president’s ‘Now is the Time’ gun safety initiative.”

A recent innovation allows a gun owner to only unlock a safe with a fingerprint scan and an “RFID-equipped bracelet.”

Others have suggested manufacturing GPS tracking and RFID chips into every gun.