Comment Re:Smart guns... (Score 1) 814
Actually some do. My parents bought a safe with a digital lock that requires batteries to power the lock and retract the deadbolt in the doors. When it locks all their stuff in I'm just gonna say "told you so."
Oh I don't disagree that some safes can use batteries in their design, what I meant by requirement is that it isn't some rule written in stone that a safe must use batteries.
The catch with smart gun tech is that I don't see how it can work without some sort of energy storage medium. It's either batteries, long lasting capacitors, or something to store the energy necessary to perform the computation necessary to verify the user and validate their use of the firearm.
The only alternative I could see being a possible alternative to persistent energy storage is kinetic to inductive charging, like those flashlights you shake that charges a capacitor. That said, I don't think having to vigorously shake a firearm before it boots up it's verification circuitry is a good design.