Unity developers are accustomed to the Play mode within the Unity editor, which allows you to run your project without having to build and install it on the target device after every change. Holographic emulation within the Unity editor allows you to work in a similar iterative process with HoloLens.

There are two modes, namely Remote to Device and Simulate in Editor:

• The Remote To Device mode requires you to have a connection to a physical HoloLens device. The app behaves like it's running on the device, but the graphics are displayed in Unity. The device's sensors are used as input to the Game window.
• In the Simulate In Editor mode, your app runs on a simulated Holographic device, directly in the editor with no connection to a real-world device. You use a game controller to control the virtual human player.

To enable holographic emulation, follow these steps:

1. From the main menu, choose Window | Holographic Emulation.
2. Choose Emulation Mode, either Simulate in Editor or Remote to Device.

The pane is as follows:

For more information, including other Holographic emulation options, see the Unity manual page on Holographic Emulation at https://docs.unity3d.com/Manual/windowsholographic-emulation.html.