Locker Protocol Wallet

MetaMask-compatible wallet with air-gapped QR signing - your keys never touch this device.

Locker Protocol Wallet — the air-gapped web3 wallet Locker Protocol Wallet is a free, open-source, MetaMask-compatible wallet where your private keys never touch your browser. Signing happens on a separate, offline device (the Locker Vault) and travels back as a QR code — so a compromised browser, a malicious dApp, or a phishing site has nothing to steal. Why Locker is different 🔒 Your keys stay air-gapped. No seed phrase, no private key, and no password that can derive one ever lives in this extension. It's watch-only by design. 🌐 Works on any dApp. Exposes the standard window.ethereum provider, so swaps, bridges, lending and NFT marketplaces see it exactly like MetaMask. Connect, sign by QR, done. 📷 QR in, QR out. The extension builds the transaction, your offline Vault reviews and signs it, and you scan the signature back. Nothing sensitive crosses the gap. ⛓️ Multi-chain EVM. Ethereum and every major EVM network. 🧩 No account, no tracking. No sign-up, no telemetry, no analytics, no data collection. How it works Install the free Locker Vault on a dedicated offline device (an old phone works). Import your public addresses into the extension by QR. Use any dApp normally — when it's time to sign, scan the request into the Vault and scan the signature back. Your keys stay offline, forever.