@Jim Mitchel Re: 'Smart guns' - an inherent failure
Clearly you don't own firearms or know anything about them.
The author went on about some kid at MIT who was reinventing the fingerprint scanner on the gun.
You blather about the RFID tag in a ring or bracelet or something else used to unlock the gun.
Neither system will work in real life.
In terms of gun safety... there are gun safes that either use a combination lock, rfid card or rfid ring. Secures the gun in the home and its ready for use when needed.