Enhancing Ledger Integration for Polkadot Parachains: A Proposed Solution

Ledger integration with Polkadot parachains is crucial but presents challenges, including extended response times and non-intuitive application experiences due to unique account derivation paths.

With no dedicated Ledger app for parachains, users risk losing access to funds due to insecure browser extensions and mobile apps. To protect against this danger, we suggest developing an application with a single signature standard usable across multiple parachains — much like Keplr in Cosmos or Metamask on Ethereum-based blockchains.

Below is a table summarizing the challenges and impact of the current Ledger integration model and the recommendations to streamline Polkadot-Ledger integration:

A Universal Ledger App for Improved Security and User Experience

Learn about how we propose to make a unified Ledger app by eliminating data encoding on the device in our blog post: Proposed Solution For Ledger Integration Compatible With All Polkadot Parachains. We provide a demonstration of one potential implementation with transactions to three parachains in what we believe to be a reasonable compromise that could benefit the entire ecosystem!