GridPlus Lattice1
score
Fees: higher one-time device cost; free app
Best for active Ethereum and DeFi users who want a big screen to actually read what they are signing. The caveats are the high price and the always-connected design, which suit power users more than minimalists.
What the Lattice1 is
The GridPlus Lattice1 is a desktop-sized hardware wallet built around a large touchscreen, aimed squarely at Ethereum and DeFi users. Released by GridPlus (founded 2017), it combines a secure element with removable SafeCard smartcards that store keys and can be carried separately from the base unit. Unlike pocket wallets, it connects over Wi-Fi and presents a desktop-class interface, with the goal of showing you readable contract data so you actually understand what you are signing.
Scorecard highlights
The security model earns an 8, helped by the secure element and SafeCard architecture, and supported assets land at 8 with a strong Ethereum and EVM focus. App and UX score 7.5: the big screen makes complex transactions far clearer than a tiny display can. The weakest criterion is value at 6, because the Lattice1 is expensive relative to almost every competitor, and transparency sits at 7 since the firmware is only partially open.
Cost
This is the priciest device in this comparison by some margin, a higher one-time cost with a free app. You are paying for the large touchscreen, the SafeCard system and the desktop-class experience, so the value proposition rests on whether those features match how you actually transact.
The main caveats
The Lattice1 is an always-on, networked device, which is a larger attack surface than an air-gapped wallet that never touches a connection. Combined with the high price and a niche ecosystem, it is a specialist tool rather than a minimalist's cold-storage pick. The partially open firmware also means it is not as fully auditable as the most transparent rivals.
Who it suits
Active Ethereum and DeFi users who sign complex contract interactions and want a screen big enough to read every detail are the target audience, and for them the readability is genuinely valuable. If you want cheap, air-gapped simplicity, this is not the device. Consider your transaction patterns rather than the spec sheet alone; nothing here is financial advice.
Overall 7.5 / 10 — the weighted average of the criteria above. How we score →
- + Large touchscreen makes verifying complex EVM transactions much clearer
- + Secure element plus removable SafeCard smartcards for portable key storage
- + Strong Ethereum/DeFi focus with readable contract data on-device
- + Wi-Fi connectivity and a desktop-class interface
- − Expensive relative to most competitors
- − Always-on networked device is a larger attack surface than air-gapped wallets
- − Firmware is only partially open and the ecosystem is niche
Is the GridPlus Lattice1 worth the price?
+
It is the most expensive device we compare, and value scores just 6 as a result. It earns its keep for active Ethereum and DeFi users who benefit from the large touchscreen and readable contract data; for simple cold storage, cheaper wallets deliver more per dollar.
Is the Lattice1 safe?
+
It combines a secure element with removable SafeCard smartcards and scores 8 on our security model. The caveat is that it is an always-on, networked device over Wi-Fi, which is a larger attack surface than an air-gapped wallet, so it favours power users who understand that trade-off.
What are SafeCards?
+
SafeCards are smartcards that store your keys and slot into the Lattice1. They let you keep key material separate from the base unit and carry it independently, adding flexibility for how you store and move between devices.
What does the Lattice1 support?
+
It is focused on Ethereum and the wider EVM ecosystem, with supported assets scoring 8. Its standout feature is showing readable contract data on the large screen so you can verify complex DeFi transactions before signing.
Is the Lattice1 open-source?
+
Only partially. The firmware is not fully open, so transparency scores 7, below the most auditable wallets. It is a specialist DeFi tool rather than a maximally verifiable one.