How to Use MetaMask

EIP-4527 is an Ethereum Improvement Proposal that provides a secure, transparent, and user-friendly solution for data transfer between offline signers and watch-only wallets using QR codes.

What is EIP-4527?

EIP-4527 (Ethereum Improvement Proposal 4527) is a standard designed for the Ethereum ecosystem, aimed at achieving secure and transparent data transfer between offline signers (such as hardware wallets or offline mobile wallets) and watch-only wallets using QR codes. It provides a standardized process and protocol to ensure users can securely sign transactions or data without connecting to the network.

TokenPocket Usage Tutorial

1. Open TokenPocket, click on [Details], and select [Link Other Wallet]. Only wallets imported or created using mnemonic phrases can be displayed.

1. The QR code display for connecting wallets requires [Password Verification]. After verification, you can see the QR code. The interface allows you to view the QR code content. Below is a tutorial for interacting with wallets supporting EIP-4527. Other wallets supporting 4527 have similar interaction methods.

1. Open the Metamask wallet, click on the top menu, and select [Add Account or Hardware Wallet].

1. Choose [Add Hardware Wallet], QR-based.

1. Click [Continue] at the bottom. The wallet import uses the default display/selection method for sub-wallets. After checking the addresses you need to import, click [Unlock] to see the status of the imported watch-only wallet.

1. When execution is needed, a scan interface will pop up after normal operations. This operation is the same as using a cold wallet and watch-only wallet for scanning.

The Metamask mobile version does not have an entry for displaying the QR code for the 4527 solution. If you see a similar entry in the plugin wallet, you can follow similar steps to proceed.