WPT details: https://wpt.fyi/results/digital-credentials?label=master&label=experimental&aligned
Websites can and do get credentials from mobile wallet apps through a variety of mechanisms today (custom URL handlers, QR code scanning, etc.). This Web Platform feature would allow sites to request identity information from wallets via Android's IdentityCredential CredMan system. It is extensible to support multiple credential formats (eg. ISO mDoc and W3C verifiable credential) and allows multiple wallet apps to be used. Mechanisms are being added to help reduce the risk of ecosystem-scale abuse of real-world identity (see https://docs.google.com/document/u/1/d/1L68tmNXCQXucsCV8eS8CBd_F9FZ6TNwKNOaFkA8RfwI/edit).
Without this, websites and wallets can only communicate in ways that are more opaque to the browser and OS.
Samples: https://digitalcredentials.dev/docs/requirements
Explainers: https://github.com/w3c-fedid/digital-credentials/blob/main/explainer.md