Envoy generates a seed and stores it on your phone’s secure element. Since most users have iCloud Keychain or Android Auto Backup enabled, the seed is automatically synced to your other iOS or Android devices – fully end-to-end encrypted, without needing to give Envoy permission to access your iCloud or Google account. This encryption means that only you can access this data, not even Apple or Google.

The fully encrypted Envoy Backup is uploaded to Foundation’s servers, alongside a hash of the seed (a cryptographic representation of the seed that proves your knowledge of the seed, not the seed itself!) so that we can ensure no one else can attempt to download your backup without proving knowledge of your seed phrase.