ERC2612
From CryptoWiki
"A function permit extending ERC-20 which allows for approvals to be made via secp256k1 signatures. This kind of "account abstraction for ERC-20" brings about two main benefits:
- transactions involving ERC-20 operations can be paid using the token itself rather than ETH,
- approve and pull operations can happen in a single transaction instead of two consecutive transactions,
while adding as little as possible over the existing ERC-20 standard."
