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Version: SDK V4 (latest)

Introduction to Session Keys in dApps 🌐

This guide focuses on session keys in decentralized applications (dApps), highlighting their role in enhancing user experience and security.


Session Keys: Session keys are temporary cryptographic keys used in dApps for validating transactions or operations without the need for constant user interaction, maintaining both security and ease of use. They're like one-time passwords but for blockchain transactions.

Why Session Keys?

Traditionally, blockchain operations require explicit user approval for each transaction, typically through a digital signature. While secure, this can be cumbersome, particularly for frequent transactions. Session keys offer a seamless and user-friendly alternative.


User-Friendly Transactions: Utilizing session keys allows dApps to process multiple transactions with single user approval, greatly enhancing the user experience.

How Do Session Keys Work?

Session keys are temporary and have defined permissions. Once a user approves a session, the dApp can autonomously execute transactions within the session's limits, eliminating the need for further approvals.


Scope and Permissions: The scope of a session key, like the types, duration and volume of transactions it can authorize, is predefined. This ensures a balance between control and convenience.

Use Cases of Session Keys

  • Token Transfers: Automating small, recurrent token transfers without requiring the user to confirm each one.
  • Voting in DAOs: Facilitating users to participate in multiple votes in a decentralized autonomous organization (DAO) without repeated confirmations.

Security Reminder: Despite their convenience, session keys must be handled with care. It's crucial to strictly define their scope to mitigate potential security risks.

Next Steps

Throughout this tutorial series, we'll explore:

  • Smart Contract Analysis: Understanding the Session Validation Module.
  • Frontend Initialization: Setting up the frontend using Next JS.
  • SDK Integration: Integrating Biconomy SDK for smart account management.
  • Session Key Management: Creating and managing session keys.
  • ERC20 Transfer Execution: Using session keys for ERC20 token transfers.

Ready to get started? Let's head over to the Session Validation Module in the next section! 🌟


Advanced Topic: This guide is tailored for those with a grasp of blockchain concepts and basic programming skills. New to blockchain? Consider reviewing foundational concepts first.