Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Highlighting System Free.
Highlighting System v4.1
Highlighting System package allows you to easily integrate outline glow effect for objects highlighting in your Unity project.
• Works as an Image Effect on Camera
• Compatible with Forward and Deferred rendering paths, HDR, Gamma and Linear Color Space, GPU Instancing
• Original renderer materials remains intact (sharedMaterials will remain shared)
• VR: Compatible with Single Pass (Fast) Stereo Rendering Method
• Fully compatible with LODGroup component
• Works with static and skinned meshes
Three highlighting modes available:
Useful for highlighting objects under the mouse cursor.
Useful to pay attention to a specific object (e.g. tutorial item).
3. Constant (with optional fade in/out)
Can be used to constantly highlight objects (e.g. pickable items or currently selected objects).
• XBox One
• HTC Vive