ARKit Plugin is a Unity project that you can load up into Unity 2017.1 or later. The Unity project contains the plugin sources and some example scenes and components that you may use in your own projects.
The plugin is open sourced and is released under the MIT license.
SwiftShot: Creating a Game for Augmented Reality in ARKit 2
Developing for ARKit 1.5 (Spring 2018 Update) using Unity ARKit
Understanding Augmented Reality in ARKit
iOS Human Interface Guidelines for ARKit
Building Your First AR Experience
ARKit Project Samples using Xamarin
Interactive Content with ARKit(with Sample Code)
Using Vision/Core ML in Real Time with ARKit
Creating an Immersive AR Experience with Audio
Handling 3D Interaction and UI Controls in Augmented Reality
Creating Face-Based AR Experiences using the TrueDepth camera on iPhone X
Apple's ARKit Developer Forums
Requirements:
Unity v2017.1 or later.
iOS 11.3 or later.
macOS 10.13 (High Sierra) or later.
Xcode 9.3 Beta or later, with iOS SDK that includes ARKit Framework.
iOS device(A9 or later processor)that supports ARKit (iPhone 6S or later, iPad (2017) or later. The iPhone 8 or X with the 'A11' processor provides the best performance.
A few screenshots of the 26 3D models (located in the 3D Models folder), which you can use in many different AR projects. All 3D models are in the required .dae file format AKA Collada.