Experimenting with the Signal API on Chrome

Experimenting with the WebAuthn Signal API on Chrome

An initial implementation of the Signal API is present on Chrome 130.0.6697.0+.

Requirements

• A Google account.
• The latest available version of Chrome for your platform.
• A platform that supports Google Password Manager passkeys, which can be either of these:
  • Windows with a TPM
  • MacOS
  • Linux
  • ChromeOS

Instructions

• Enable the web platform experimental features flag (chrome://flags/#enable-experimental-web-platform-features) and restart Chrome.
• Sign in to Chrome with a Google account if you're not signed in already.
• When creating a passkey, choose "Google Password Manager" and follow instructions. You might have to create a PIN or enter the lockscreen for your Android phone.
• Try calling the signal family of methods.

See this demo for an example front-end only implementation.

Limitations

For now, only Google Password Manager passkeys are affected by the API, and only on Chrome desktop.