Original post: https://letitcode.dev/t/eip-2771-explained-how-to-build-gasless-dapps-with-minimal-code-example/45
Tired of new users leaving your dApp because they need ETH for gas? EIP-2771 solves this "chicken-and-egg problem" by enabling gasless transactions through Meta Transactions. Users simply sign their intent for free, and a relayer pays the gas to submit the transaction on-chain. This process relies on a Trusted Forwarder to verify the signature and append the original sender's address to the calldata. Your contract then uses the custom _msgSender() function to extract the real user from the last 20 bytes of calldata. EIP-2771 provides a superior UX for onboarding, gaming, NFT minting, and DAO voting. The sources include a minimal example demonstrating gasless transfers for both ERC20 and ERC721 tokens
