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Device Bound Session Credentials (DBSC) JavaScript APIBrief description
Allows websites and Identity Providers to synchronously check the registration state of a Device Bound Session Credentials (DBSC) session. DBSC provides cryptographic protection against account hijacking by binding sessions to the user's device, but currently relies on asynchronous HTTP headers. This API provides deterministic guarantees of session establishment before granting access, enabling secure SSO handoffs and synchronous cookie issuance
https://chromestatus.com/feature/6212149417476096