If you have electric locks on anything such as your impenetrable firearm safe or anything of that nature consider this.
People are concerned about EMP (electronic magnetic pulse) weapons being detonated above our country. Are they real? You bet they are and in the event of a nuclear strike they may be the first devices launched. Working theory is that two or three big ones detonated above farabove Nebraska (central U.S. location) would shut down the entire electric grid for many years (and they will) and EMP will also smoke nearly all things electronic and all modern circuitry that is not seriously EMP proofed. Basically devices of this type could take our modern society instantly back to the mid-1700s or earlier.
If you have electronic locks on anything, they will be frozen and locked up tight as a wedge. Now consider what kind of lock you may have on your firearm safe, if you have one-hummmmm? If you have a Liberty, Winchester, Remington, Browning, Cannon, Colt, AMSEC, S&W, or whatever that has an electronic lock and an EMP event were to occur-what then? You are locked out, period! Small stuff for one or two hand guns like Gun Vault you can defeat to open fairly easily, but the big stuff is another story.