[Ethereum Foundation Launches Universal Ethereum Signer App on Passport Prime] According to Crypto Briefing, the Ethereum Foundation is launching an app called Universal Ethereum Signer on Foundation's Passport Prime hardware device, running on its KeyOS operating system. Developed with funding from the Ethereum Foundation, the app, developed by Ledger co-founder and current ZKnox CEO Nicolas Bacca, is currently in the testing phase. The app allows users to securely audit and sign Ethereum transactions on isolated hardware without having to hand over their private keys to their phones or computers. For Passport Prime users, this is the first time the device can be used as a dedicated signer for Ethereum transactions via a third-party application.