Over the last few months, I’ve been working on a side project that turned into a full obsession — a mechanical mini vault designed to protect things like Bitcoin seed phrases, hardware wallets, hard drives containing personal information like documents, photos videos etc and critical backups.
No batteries. No software. Just physical engineering — a dial, a custom gear system, and locking pins — all in a waterproof, EMP-shielded cube. I wanted something that felt like a vault... just scaled down for cold storage.
Why? Because so many storage solutions today are either:
- Digital, or cloud base which can be hackable or
- Fireproof sheets or envelopes (but not anti-theft or physical attack resistant)
- Don't offer protection against electric shockwaves
- Are not meant to resist disasters or catastrophic events
I’m still prototyping, but the design is fully mechanical and the lock can be user-set. Would love to hear thoughts on:
- What you’d want in a product like this
- What threats you actually consider in your cold storage
- Whether something like this feels useful or overkill
Open to feedback, even if it’s critical — just trying to build something real for real people.