I'd never heard that term, until I read the Adaptive Curmudgeon's story of his electronic gun safe.
Long ago I bought a cheap pistol safe. I used it to store my cheap pistol.
It was a handy little safe; pleasing black metallic finish, foam coated interior. I “multitasked” with it. My computer monitor was too low. What better use for a pistol safe than a monitor stand? I was surfing the net while armed.
I used the safe to store a stapler and a gun.
Since I didn’t live in Mogadishu or Detroit I mostly used the stapler. Every time I needed to staple something I was reminded of the combination. Despite what safety Nazis tell you, I never accidentally shot the computer. Nor did I inadvertently staple any home invading criminals.
Inevitably, his safe 'gave up the ghost'. He describes his efforts to restore it to operation. It's a long tale, and very funny. Go read it for yourself.