updated scene camera and removed touch phase

Assets/Scenes/SampleScene.unity

   m_ReflectionIntensity: 1
   m_CustomReflection: {fileID: 0}
   m_Sun: {fileID: 0}
-  m_IndirectSpecularColor: {r: 0.44657898, g: 0.4964133, b: 0.5748178, a: 1}
+  m_IndirectSpecularColor: {r: 0.44657898, g: 0.49641287, b: 0.5748173, a: 1}
   m_UseRadianceAmbientProbe: 0
 --- !u!157 &3
 LightmapSettings:
     y: 0
     width: 1
     height: 1
-  near clip plane: 0.3
-  far clip plane: 1000
-  field of view: 25.3
+  near clip plane: 0.1
+  far clip plane: 20
+  field of view: 60
-  m_Depth: -1
+  m_Depth: 0
   m_CullingMask:
     serializedVersion: 2
     m_Bits: 4294967295
   m_TargetEye: 3
   m_HDR: 1
-  m_AllowMSAA: 0
+  m_AllowMSAA: 1
-  m_ForceIntoRT: 1
+  m_ForceIntoRT: 0
   m_OcclusionCulling: 1
   m_StereoConvergence: 10
   m_StereoSeparation: 0.022
   m_PrefabInternal: {fileID: 0}
   m_GameObject: {fileID: 1335839533}
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
-  m_LocalPosition: {x: 0, y: 1, z: -18}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
   m_LocalScale: {x: 1, y: 1, z: 1}
   m_Children:
   - {fileID: 282840814}

Assets/Scripts/PlaceOnPlane.cs

         set { m_PlacedPrefab = value; }
     }
     
-    static List<ARRaycastHit> s_Hits;
-    GameObject m_SpawnedObject;
+    /// <summary>
+    /// The object instantiated as a result of a successful raycast intersection with a plane.
+    /// </summary>
+    public GameObject spawnedObject { get; private set; }
+
-
+    
+    static List<ARRaycastHit> s_Hits = new List<ARRaycastHit>();
+    
-        s_Hits = new List<ARRaycastHit>();
     }
 
     void Update()
             {
                 Pose hitPose = s_Hits[0].pose;
 
-                if (m_SpawnedObject == null)
+                if (spawnedObject == null)
-                    if (touch.phase == TouchPhase.Began)
-                    {
-                        m_SpawnedObject = Instantiate(m_PlacedPrefab, hitPose.position, hitPose.rotation);
-                    }
+                    spawnedObject = Instantiate(m_PlacedPrefab, hitPose.position, hitPose.rotation);
-                    m_SpawnedObject.transform.position = hitPose.position;
+                    spawnedObject.transform.position = hitPose.position;
                 }
             }
         }