HoloLensでGestureのAir-TapのPressのみのサンプル。 https://developer.microsoft.com/en-us/windows/holographic/gestures_in_unity

HoloLensGestures.cs

using UnityEngine;
using System.Collections;
using UnityEngine.VR.WSA.Input;

public class HoloLensGestures : MonoBehaviour {

	[SerializeField]
	UnityEngine.Events.UnityEvent ev;
	
	void Start()
	{
		InteractionManager.SourcePressed += InteractionManager_SourcePressed;
	}
	
	// Air-Tap Pressed
	void InteractionManager_SourcePressed(InteractionSourceState state)
	{
		ev.Invoke();
	}
	
}