# Ethereum Foundation's Universal Ethereum Signer Heads to Passport Prime Beta

By Simon Yoon

Canonical URL: https://www.tokenpost.com/news/technology/55784
Published: 2026-11-12T18:58:06.000Z
Updated: 2026-11-12T18:58:06.000Z
Section: Technology

> Ledger co-founder Nicolas Bacca built the app. Foundation also plans an App Catalog for updates from trusted developers.

The Ethereum Foundation's Universal Ethereum Signer will enter beta on Foundation's Passport Prime device, where users will sideload the app to sign Ethereum transactions during testing.

Ledger co-founder Nicolas Bacca built the app. It runs on Foundation's KeyOS for Passport Prime.

Foundation co-founder and CEO Zach Herbert said KeyOS gives each app a hardened child key instead of access to the device's master seed. Foundation plans to add an App Catalog that would let trusted developers send updates directly to Passport Prime users. Herbert compared the planned catalog with F-Droid on GrapheneOS.