--- title: "SecondScreen (core)" slug: "150-core-secondscreen-schemas" updated: 2025-03-19T17:13:08Z published: 2025-03-19T17:13:08Z canonical: "docs.developer.comcast.com/150-core-secondscreen-schemas" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.developer.comcast.com/llms.txt > Use this file to discover all available pages before exploring further. # SecondScreen (core) **SecondScreen Schema 1.5.0 | Core SDK** ## Types ### SecondScreenEvent An a message notification from a second screen device ``` type SecondScreenEvent = { type: 'dial' version?: string data?: string } ``` ---