The company
About Ermanno Moser
A focused hardware company building cold-storage devices in small batches, with every design decision documented.
These hardware wallets are designed to store the private keys for cryptocurrencies, NFTs, or other crypto-based assets, and do not offer any additional services — offline, in your sole self-custody. They are a dedicated security tool, with no connection to any online financial platform or service.
Why we build it ourselves
Ermanno Moser started with a simple problem: too much security hardware comes from factories no one can name. After years working in embedded electronics, we set out to do the opposite, with short production runs, open designs, and a team that stands behind every device it ships.
Mass-produced security hardware asks you to trust a supply chain you can't see. We take the opposite approach: a short, transparent chain — designed here, assembled here, flashed here, tested here, and sealed here. Every unit that leaves our facility is assembled, flashed, tested, and sealed by our own team.
What we will never claim
No security device is beyond compromise, and we won't tell you otherwise. What we document instead is precisely what each device protects against, the threat models it was designed for, and the ones it wasn't. If a product of ours isn't the right tool for your situation, we'd rather tell you before you order.
Business information
Ermanno Moser — a brand of UO Solutions, LLC
2875 NE 191st STE 801 · Miami, FL 33180 · United States
[email protected] · Contact page
- Designed & assembled in-housePCB layout, firmware, enclosure, final assembly — all under one roof.
- Individually testedEvery device is flashed, verified against its firmware signature, and function-tested before sealing.
- Documented threat modelEach product ships with plain-language documentation of what it does and doesn't protect against.
- RepairableStandard fasteners, published schematics, spare parts on request.