GridPlus Lattice1

Overview

The GridPlus Lattice1 is unlike almost any other hardware wallet: it's a large, always-on desktop device with a full color touchscreen and swappable 'SafeCard' smartcards that each hold keys. Rather than a pocket device you plug in occasionally, the Lattice1 is designed to sit on your desk, connected to your network, ready to sign — aimed at power users, active DeFi participants, and teams who sign frequently and want a big screen and removable key cards.

The SafeCard system is its signature feature: keys live on individual smartcards with secure elements, and you can swap them in and out, keep spares as backups, and separate identities across cards. The large touchscreen makes reviewing complex smart-contract interactions far clearer than a tiny wallet display, a genuine advantage for Ethereum and DeFi users. It connects over WiFi and USB and integrates with wallets like MetaMask.

The honest trade-offs: being always-on and network-connected is a very different posture from a cold, air-gapped device — convenient for frequent signing, but not the minimal-exposure model that Bitcoin cold-storage purists prefer. It's only partially open-source, it's expensive, and it's physically large, so it's overkill for someone who just wants to secure some Bitcoin and check it occasionally. But for power users and teams who sign often, value a big verification screen, and want swappable key cards, the Lattice1 fills a niche that pocket wallets don't.