Metamask: Unlock Unique Sale Items and Avoid Wallet Closures
As the cryptocurrency market continues to grow, secure wallets are essential to protect users’ assets. Metamask, a popular wallet solution for web3.js, offers a robust way to manage cryptocurrencies while ensuring user security. In this article, we’ll explore how you can use Metamask to lock down unique sale items and prevent wallet closures.
Understanding the Problem
Imagine you’re browsing an e-commerce website for rare collectibles. You’ve been saving for hours, but the sale item has disappeared from view due to technical issues or user error. This experience can be frustrating and demotivating, especially if you’ve invested significant time and effort into unlocking these valuable items.
The Metamask Solution
To solve this problem, we will walk you through a step-by-step guide on how to use Metamask to lock individual sale items and prevent wallet closure.
Step 1: Set up your Metamask account
Before you begin, make sure you have set up a MetaMask account. You can create one by following these steps:
- Open the MetaMask website ([www.metamask.io]( and click on the “Create Account” button.
- Follow the instructions to connect your wallet (e.g. Ethereum) and set up your payment method.
Step 2: Create an Individual Sale Item
To create an individual sale item, you need to do the following:
- Go to your Metamask dashboard ([www.metamask.io]( and click on “My Account”.
- Click on “Wallet” and then “Add Token”. Follow the instructions to set up your new token.
- Give your token a unique name, description and price (e.g. 0.1 ETH).
Step 3: Lock the Sale Item
To lock your sale item, you need to do the following:
- Go to your Metamask dashboard ([www.metamask.io]( and click on “My Wallet”.
- Click on “Add Token” again.
- Select the token you created in step 2 (e.g. your unique sale item).
- Enter a specific price and a lock flag (e.g. “locked” or “available for purchase”).
Step 4: Set up auto-unlock
To prevent your wallet from being locked, you can set up an auto-unlock feature:
- Go to your Metamask dashboard ([www.metamask.io]( and click on “My Wallet”.
- Click on the “Add Token” button again.
- Select the token you created in step 2 (e.g. your custom sale item).
- Under the “Lockout Alert” settings, set a timer (e.g. every hour) to automatically unlock the sale item.
Example Code: Setting Up Auto-Unlock Using JavaScript
If you are building an e-commerce application using web3.js and Metamask, you can set up auto-unlock with the following example code:
const MetaMask = request('@metmask/web3-core');
const Web3 = require('@metmask/web3');
// Create a new Web3 instance
const provider = new Web3(new Web3.providers.HttpProvider('
// Set up your wallet
const wallet = await provider.ethereum.createAccount('YOUR_WALLET ADDRESS');
const walletAddress = wallet.address;
const walletToken = await wallet.getBalance();
console.log(walletaddress, walletToken);
// Create a new metamask instance with autolock enabled
const metamaskInstance = new MetaMask({
provider,
showWallet: true,
autoLock: true
});
// Set the lock flag (e.g. "locked" or "buyable")
metamaskInstance.setLockFlag('your_token_name', 'locked');
// Simulate a sale item being purchased
console.log(metamaskInstance.buy('your_token_name', 10, { from: walletAddress }));
Conclusion
By following the steps and sample code below, you can use Metamask to lock individual sale items and prevent wallet locks. This ensures that users have the flexibility to buy and sell their tokens without locking them out of the system.