[Home](./index.md) > [@snowplow/browser-tracker](./browser-tracker.md) > [BrowserTracker](./browser-tracker.browsertracker.md) > [getDomainSessionId](./browser-tracker.browsertracker.getdomainsessionid.md) ## BrowserTracker.getDomainSessionId property Get the current domain session ID (from first party cookie) Signature: ```typescript getDomainSessionId: () => string; ```