ERC-7702
What is ERC-7702?
ERC-7702 is a recent Ethereum standard. It introduces a lightweight, backward-compatible way to give regular wallet addresses (EOAs — Externally Owned Accounts) temporary smart contract functionality — all within a single transaction.
Unlike traditional smart contract wallets, ERC-7702 lets you access powerful features like gas sponsorship, session keys, and transaction batching without deploying a new contract or changing your address.
Why It Matters
EOAs like MetaMask are simple but limited: every transaction requires a manual signature, and advanced workflows (like multi-step swaps) are clunky. Smart contract wallets solve this — but require deploying new addresses, which breaks compatibility.
ERC-7702 brings smart wallet power to your existing address, no migration needed. It’s fast, modular, and completely opt-in.
Key Features
Temporary Smart Contract Control: Execute complex logic (like approve + swap) in a single transaction.
Session Keys: Grant short-term, limited access to trusted apps or functions.
Gas Sponsorship: Let dApps or services cover gas fees on your behalf.
Account Abstraction Ready: Designed to work alongside ERC-4337, but simpler to implement.
No Proxy or New Address: Your EOA remains intact — no new smart wallet contract required.
How It Works in KEYRING PRO
When you activate ERC-7702 features (like using the gas sponsor option) in KEYRING PRO, your EOA temporarily adopts smart wallet behavior by delegating to a shared smart contract logic module.
Currently, KEYRING PRO uses Uniswap’s Calibur — a singleton contract that handles batched transactions, session keys, and permissioned execution.
Signature-Based Execution Flow
Instead of sending a transaction directly, your wallet signs instructions off-chain. A relayer then submits this signed batch to the Calibur contract. Calibur verifies your signature, runs the logic, and sponsors gas if allowed.
More info:
Revert Anytime: Dismiss Smart Account
When you're done, you can return your EOA to its original state using the Dismiss Smart Account feature. This requires a regular on-chain transaction (gas not sponsored).
Dismiss Smart AccountNotes & Limitations
Not all dApps or exchanges support smart contract-style addresses.
Tooling for ERC-7702 is still evolving.
Developers must handle nonces, replay protection, and session key scope carefully.
That said, ERC-7702 is gaining traction fast because it:
Keeps your existing address (no migration)
Adds smart features without long-term complexity
Provides modular, opt-in access to smart wallet UX
Conclusion
ERC-7702 is a major step forward in Ethereum account design. By turning EOAs into temporary smart accounts — without sacrificing simplicity — it empowers developers and users to bridge the gap between old wallets and new possibilities.
In KEYRING PRO, it unlocks sponsored gas while keeping you in full control.
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