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In today's video, we will learn about ERC20 permit, a mechanism that allows you to sign a message to approve someone else to spend your tokens. This process requires gas and involves two transactions: one for approval and one for the actual transaction. There is a clever way to give allowance to a spender by signing a message and having the smart contract understand your intent. This process is not yet finalized in EIP but is implemented in Open Zeppelin. Don't forget to like and subscribe before we begin!