This is a demo for the non-cookie Storage Access API extension. See the related blog post and explainer.
- Be sure test-third-party-cookie-phaseout is enabled and restart your browser if needed.
- Open the iframe site in its own tab and click somewhere on the page to register user interaction. It should say 'Connected'.
- In this window, type some message in the box and click 'Send' below and approve the permissions prompt.
- In the other window it should now say 'Connected: ' followed by the same message.
- The message was shared via Broadcast Channel using the SAA handle to access unpartitioned storage.
- You can find the code for this site here, and the iframe here.