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In today's video tutorial, we will learn about ERC20 permit, a mechanism allowing you to sign a message to approve spending on your ERC20 tokens. This process involves letting the smart contract know the approval for the spender with a specific value, requiring gas for the interaction. A clever method involves signing a message, sending it via a relay, and the smart contract understanding the allowance for the spender. While this concept is not finalized in EIP, it is being implemented in Open Zeppelin. Don't forget to like, subscribe to the channel, and start learning about ERC20 permit.