MetaMask^* Login®

MetaMask is a secure wallet and gateway to blockchain sites. You can import your existing wallet or create a new one, and log into websites to trade, lend, borrow, play games..

Let Your Users Login with MetaMask. We introduced in this article a one-click, cryptographically-secure login flow, with no third party involved, called “Login with MetaMask”. We explained how a digital signature of a back end-generated random nonce can prove ownership of an account, and therefore provide web3 authentication.