Each room of your office, school, hotel or institution that contains an Apple TV, Chromecast or Reflector-connected device is assigned a unique Ditto code. The code for each room will randomly generate as an easy-to-remember phrase such as “Optimal Flight,” or it can be a random alphanumeric code such as “9D3G7U.”


To share your computer screen to the big screen, navigate to and enter the unique code for the room you are sitting in.

A quick, one-time download will appear on your computer. Open the app and you’ll see only two options—one to share your entire computer screen, and one to share a specific application.

Once you select an option, your computer screen will appear on the TV or projector in front of you. This allows you to easily share documents, reports, presentations and more (including audio) with everyone in the room.

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