Wallet Portability

Capsule’s wallet portability feature allows users to seamlessly use their wallet across different applications and platforms, providing a more fluid and user-friendly experience in the crypto ecosystem.

Understanding Wallet Portability

Wallet portability in Capsule refers to the ability of users to access and use their wallet across various applications without the need for manual key exports or imports. This feature is designed to combine the benefits of third-party wallets and embedded wallets.

Wallet portability is not about transferring assets between wallets, but rather accessing the same wallet from different applications and platforms.

How Capsule Implements Wallet Portability

Capsule’s approach to wallet portability leverages its unique architecture and security features:

  1. Unified User Identity: Capsule associates wallets with user identities (typically email addresses) rather than individual applications.

  2. Multi-Party Computation (MPC): Capsule’s MPC-based key management allows for secure key sharing across applications without exposing the full private key.

  3. Permissions Framework: A granular permissions system ensures that applications only have the access they need, enhancing security in a multi-app environment.

  4. Seamless Authentication: Users can log in to new applications using their Capsule credentials, automatically gaining access to their existing wallet.

This implementation ensures that users can easily and securely use their Capsule wallet across multiple applications while maintaining strong security and privacy controls.

Benefits of Wallet Portability

For Users

  • Access the same wallet across multiple applications
  • No need to manage multiple wallets or perform complex key exports
  • Consistent user experience across different platforms
  • Enhanced security through granular permissions

For Developers

  • Easier onboarding of users who already have a Capsule wallet
  • Access to users’ transaction history and on-chain data (with appropriate permissions)
  • Ability to create multi-app experiences and ecosystems
  • Reduced liability by not having to manage users’ private keys directly

Wallet Portability vs. Traditional Approaches

To understand the advantages of Capsule’s wallet portability, let’s compare it with traditional approaches:

FeatureThird-Party WalletsTraditional Embedded WalletsCapsule Portable Wallets
Portable across apps✔️✔️
Smooth in-app UX✔️✔️
Integrated with app functionality✔️✔️
No browser extensions required✔️✔️
Granular permissions per app✔️
No manual key management for users✔️

This comparison highlights how Capsule Portable Wallets combine the best features of both third-party and traditional embedded wallets, while also offering unique advantages such as granular permissions and simplified key management.

How Wallet Portability Works

1

Initial Wallet Creation

When a user creates a Capsule wallet in one application, it’s associated with their identity (e.g., email).

2

Accessing New Applications

When the user wants to use their wallet in a new application: - They log in with their Capsule credentials - The new application requests specific permissions - Upon approval, the application gains access to the user’s wallet

3

Behind the Scenes

Capsule securely shares the necessary key information with the new application, without exposing the full private key.

4

Ongoing Usage

The user can now seamlessly use their wallet across all connected applications, with each app respecting its granted permissions.

Security Considerations

While wallet portability offers great convenience, Capsule has implemented several security measures:

Granular Permissions

Each application can only perform actions explicitly approved by the user, limiting potential damage if one app is compromised.

No Full Key Exposure

Thanks to MPC, the full private key is never exposed to any single application or stored in one place.

User Control

Users can review and revoke permissions for any application at any time through the Capsule portal.

Future of Wallet Portability

Capsule is continuously working on enhancing wallet portability. Future developments may include:

  • Integration with more wallet aggregators for even broader compatibility
  • Enhanced analytics and insights for users across their entire wallet usage
  • Advanced multi-chain support for seamless cross-chain experiences

By providing true wallet portability, Capsule aims to make the crypto experience more user-friendly and secure, paving the way for broader adoption and more innovative multi-app ecosystems.