What Is GridPlus? The Lattice1 Hardware Wallet and SafeCards Explained

GridPlus describes itself as a blockchain security company working on hardware, software and tools ⁸. Public business listings date it to 2017 and place it at 100 Congress Avenue in Austin, Texas ⁹. The company says its products are designed and manufactured in the US, in a facility that meets ITAR (US defense export) rules ⁸. The website does not name the legal entity behind the brand ⁸.

The Lattice1 has two separate computers inside one case ⁴:

• The General Compute Environment runs Linux and connects to the internet over Wi-Fi or Ethernet. GridPlus designs it on the assumption that it could be compromised, so private keys never touch it.
• The Secure Compute Environment handles signing, draws the screen and reads the touch input. It has no outside connection.

The two talk only through a small memory "mailbox," not a direct link ⁴. When an app such as MetaMask or Rabby asks for a signature, the request reaches the online side, passes through the mailbox, and appears on the screen. You approve it there, and the signature goes back to the app ⁴. Because the secure side draws the screen, what you see should match what you sign even if your computer is infected ⁴.

By default, requests from third-party apps travel through GridPlus's infrastructure. Advanced users can route them through their own endpoint instead ⁶. The device stays plugged in during use ¹⁰. That makes it suited to a desk setup rather than carrying around.

Other documented hardware protections ⁴:

• Secure chips. A built-in secure enclave holds the main wallet's keys. SafeCards have their own chips. Both carry a GridPlus certificate, and the device ignores cards without one.
• Tamper mesh. A wire mesh surrounds the secure chips. If it is armed and someone cuts into it, the device erases the wallet. A battery keeps this protection running for about five years unplugged.
• Authenticity check. You can verify that a device is genuine through its stored certificate ⁶.

A SafeCard is a PIN-protected smart card that holds its own wallet. Insert a different card and the Lattice1 shows a different wallet. That lets one device manage many wallets ¹⁶.

SafeCards also serve as backups. GridPlus suggests at least three card copies kept in separate places if cards are your only backup, a different PIN on each card, and never writing the PIN on the card ⁷. If the Lattice1 itself breaks, a generic USB card reader and the SafeCard command-line tool can read the card. For cards bought in 2023 or later this recovers the seed phrase; older cards give a "seed hash" ⁷.

Wallets use a standard BIP39 seed phrase, with an optional passphrase ⁷. You can also back the phrase up on paper or steel. The docs warn never to keep the 24 words on a computer or in cloud storage ⁷. See how to set up a hardware wallet.

According to GridPlus's documentation ⁵:

GridPlus's rule of thumb: if an app connects to MetaMask or Rabby, it works with the Lattice1 ⁵. Lattice Manager is GridPlus's own companion app for Bitcoin and EVM settings, and the company says it collects no user data ⁶. Developers can use the GridPlus SDK ⁵.

The Lattice1 lists at $397 on gridplus.io. The box includes the device, one SafeCard, a two-pack of extra SafeCards and a US power supply; buyers elsewhere need a plug adapter ². A SafeCard Pack costs $40 ³. The store advertises free worldwide shipping ². Stock status differed between store pages on October 23, 2026, so check before ordering ²³. Buy from gridplus.io or an authorized seller, and use the certificate check on arrival ⁶.

• Always online. Keys stay offline in the secure chips, but the device itself is network-connected, and default traffic goes through GridPlus servers ⁴⁶. Wallets that never connect to a network work differently; see hot vs cold wallets.
• Not portable. It needs mains power during use ¹⁰.
• SafeCard PINs. Losing a card and its PIN without another backup can mean losing that wallet ⁷.
• Chain scope. Support centers on Bitcoin, EVM chains and Solana ⁵.