# PolyglotFormFill Autofill — settings

## Passkey (WebAuthn) — hardware-backed unlock

Enrol a passkey so your vault unlocks with your device's authenticator (Windows Hello, Touch ID, or a security key). The key is derived from the passkey's PRF secret, which only exists when the hardware is present — so even a malicious extension update can't decrypt your vault without it. Enrol on an empty vault (or before adding data).

Migrating re-encrypts your existing vault under the passkey. Unlock it first (open the popup, enter your passphrase), then click Migrate.

## Your base language

The language you think in. Forms in another language will be translated to this for viewing, and your answers translated back into the form's language when filling — all on-device. Install the matching language pack below to enable translation.

Base language:

## Single vault

This is automatic. Whenever the desktop app is installed and running, this browser and the desktop app use the same one vault — you enter your details once and both use them, with the same profiles, over a local on-device bridge. No toggle, no setup. Start with either app first; your data unifies into one vault. (Status below.)

## Translation languages

Nothing is bundled. A language's model (~110 MB each direction) downloads only the first time you translate that pair — then it's cached on your device. Download here to pre-load one for offline use. Everything runs on-device; only the model file is fetched, never your data.

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## Status