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In today's video, we are going to learn about ERC20 permit, a mechanism that allows you to sign a message and grant permission for someone else to spend your ERC20 tokens on your behalf. This process involves approval of the spender and requires gas for interaction with the smart contract. By signing a message and sending it through a relayer, the smart contract can understand that you are granting permission to a spender. While this feature is still in draft, it has been implemented in OpenZeppelin. Make sure to like and subscribe before we begin.