diff --git a/TODO.md b/TODO.md
index 4aeff947b38783e9426c2b001f3c5e0fe3f6c89c..a28815f7916127d5deb6cd3a6f490ac0f3b01825 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,8 +1,23 @@
 ## New API
-- make each 
-- arjs-session.html - with a select input on trackingMethod
+- pick real world with all trackingMethod
+  - hit tester with plane
 
-- trackingMethod
+- build a aframe version of that to see how it fit
+
+- check it works on all cases
+  - no special cases incompatibilities
+- full markers area
+  - learner 
+  - option: markerhelper visibility
+  - reset area
+  - store defaultareaifneeded
+
+- in tango
+  - make point cloud or not an live option
+  
+
+- DONE tango point cloud visible
+- how to handle trackingMethod
   - area-aruco
   - area-artoolkit
   - aruco
@@ -11,6 +26,8 @@
   - arkit
   - best
 
+
+
 ## New API - no three.js dependancy
 - first remove it externally
 - then remove it internally
diff --git a/three.js/arjs-anchor.js b/three.js/arjs-anchor.js
index 7b9833b5790a28b75424e6796fa048c0661f3f4b..c65aec3c9baff8d83c9a7632326893094743bc1e 100644
--- a/three.js/arjs-anchor.js
+++ b/three.js/arjs-anchor.js
@@ -17,44 +17,84 @@ ARjs.Anchor = function(arSession, markerParameters){
 	scene.add(markerRoot)
 
 	if( markerParameters.changeMatrixMode === 'modelViewMatrix' ){
-		var markerControls = new THREEx.ArMarkerControls(arContext, markerRoot, markerParameters)		
+		var controlledObject = markerRoot
 	}else if( markerParameters.changeMatrixMode === 'cameraTransformMatrix' ){
-		var markerControls = new THREEx.ArMarkerControls(arContext, camera, markerParameters)
+		var controlledObject = camera
 	}else console.assert(false)
 
-// FIXME tango - the pickability is on the marker
-// - aka handle the object positioning in a special function of ArMarkerControls
-// - arkitanchor is like ArMarkerControls
-// - make it generic to work on plane too, if the marker is markerBased
+	if( markerParameters.markersAreaEnabled === false ){
+		var markerControls = new THREEx.ArMarkerControls(arContext, controlledObject, markerParameters)		
+	}else{
+		// get multiMarkerFile from localStorage
+		console.assert( localStorage.getItem('ARjsMultiMarkerFile') !== null )
+		var multiMarkerFile = localStorage.getItem('ARjsMultiMarkerFile')
 
+		// build a multiMarkerControls
+		var multiMarkerControls = THREEx.ArMultiMarkerControls.fromJSON(arContext, scene, markerRoot, multiMarkerFile)
 
-	// build a smoothedControls
-	var smoothedRoot = new THREE.Group()
-	scene.add(smoothedRoot)
-	var smoothedControls = new THREEx.ArSmoothedControls(smoothedRoot)
+		// create ArMarkerHelper - useful to debug
+		var markerHelpers = []
+		multiMarkerControls.subMarkersControls.forEach(function(subMarkerControls){
+			// add an helper to visuable each sub-marker
+			var markerHelper = new THREEx.ArMarkerHelper(subMarkerControls)
+			markerHelper.object3d.visible = false
+			subMarkerControls.object3d.add( markerHelper.object3d )		
+			// add it to markerHelpers
+			markerHelpers.push(markerHelper)
+		})
+		this.setSubMarkersVisibility = function(visible){
+			markerHelpers.forEach(function(markerHelper){
+				markerHelper.object3d.visible = visible
+			})
+		}
+	}
 	
 	this.object3d = new THREE.Group()
-	// markerRoot.add(arWorldRoot)
-	smoothedRoot.add(this.object3d)	
+		
+	//////////////////////////////////////////////////////////////////////////////
+	//		THREEx.ArSmoothedControls
+	//////////////////////////////////////////////////////////////////////////////
+	
+	var shouldBeSmoothed = true
+	if( arContext.parameters.trackingBackend === 'tango' ) shouldBeSmoothed = false 
 
+	if( shouldBeSmoothed === true ){
+		// build a smoothedControls
+		var smoothedRoot = new THREE.Group()
+		scene.add(smoothedRoot)
+		var smoothedControls = new THREEx.ArSmoothedControls(smoothedRoot)
+		smoothedRoot.add(this.object3d)	
+	}else{
+		markerRoot.add(this.object3d)
+	}
 
-	this.update = function(){
+
+	//////////////////////////////////////////////////////////////////////////////
+	//		Code Separator
+	//////////////////////////////////////////////////////////////////////////////
+	this.update = function(){	
 		// update scene.visible if the marker is seen
 		if( markerParameters.changeMatrixMode === 'cameraTransformMatrix' ){
-			_this.object3d.visible = smoothedRoot.visible
+			_this.object3d.visible = controlledObject.visible
 		}
 		
-		// update smoothedControls
-		smoothedControls.update(markerRoot)
-	}
+		if( smoothedControls !== undefined ){
+			// update smoothedControls parameters depending on how many markers are visible in multiMarkerControls
+			if( multiMarkerControls !== undefined ){
+				multiMarkerControls.updateSmoothedControls(smoothedControls)
+			}
 
+			// update smoothedControls
+			smoothedControls.update(markerRoot)			
+		}
+	}
 }
 
 
 /**
  * Apply ARjs.Session.HitTestResult to the controlled object3d
  * 
- * @param {ARjs.Session.HitTestResult} hitTestResult - the result to apply
+ * @param {ARjs.HitTester.Result} hitTestResult - the result to apply
  */
 ARjs.Anchor.prototype.applyHitTestResult = function(hitTestResult){
 	this.object3d.position.copy(hitTestResult.position)
diff --git a/three.js/arjs-hittester.js b/three.js/arjs-hittester.js
new file mode 100644
index 0000000000000000000000000000000000000000..c4ba9b18396d7a94a33d4f38514f58bab4487741
--- /dev/null
+++ b/three.js/arjs-hittester.js
@@ -0,0 +1,47 @@
+// @namespace
+var ARjs = ARjs || {}
+
+/**
+ * Create an anchor in the real world
+ * 
+ * @param {ARjs.Session} arSession - the session on which we create the anchor
+ * @param {Object} markerParameters - parameter of this anchor
+ */
+ARjs.HitTester = function(arSession){
+	this.arSession = arSession
+}
+
+/**
+ * Test the real world for intersections.
+ * 
+ * @param {Number} mouseX - position X of the hit [-1, +1]
+ * @param {Number} mouseY - position Y of the hit [-1, +1]
+ * @return {[ARjs.HitTester.Result]} - array of result
+ */
+ARjs.HitTester.prototype.test = function(mouseX, mouseY){
+	var arContext = this.arSession.arContext
+	var hitTestResults = []
+
+	var result = THREEx.ARClickability.tangoPickingPointCloud(arContext, mouseX, mouseY)
+	if( result !== null ){
+		var scale = new THREE.Vector3(1,1,1).multiplyScalar(0.1)
+		var hitTestResult = new ARjs.HitTester.Result(result.position, result.quaternion, scale)
+		hitTestResults.push(hitTestResult)
+	}
+			
+	// TODO use clickability
+	return hitTestResults
+}
+
+/**
+ * Contains the result of ARjs.HitTester.test()
+ * 
+ * @param {THREE.Vector3} position - position to use
+ * @param {THREE.Quaternion} quaternion - quaternion to use
+ * @param {THREE.Vector3} scale - scale
+ */
+ARjs.HitTester.Result = function(position, quaternion, scale){
+	this.position = position
+	this.quaternion = quaternion
+	this.scale = scale
+}
diff --git a/three.js/arjs-session.js b/three.js/arjs-session.js
index 48d9072c46c0423e75738395c3f7ab31c7234e1f..724f5183b25a8d7a6c44740295c7a15f659ee5e9 100644
--- a/three.js/arjs-session.js
+++ b/three.js/arjs-session.js
@@ -1,23 +1,5 @@
 var ARjs = ARjs || {}
 
-function arSession_usage_example(){
-	var arSession = new ARjs.Session({
-		scene: scene,
-		renderer: renderer,
-		camera: camera,
-		sourceParameters: sourceParameters,
-		contextParameters: contextParameters
-	})
-	
-	var arAnchor = new ARjs.Anchor(arSession, parameters)
-
-
-	var intersects = asSession.hitTest(mouseX, mouseY)
-	// intersects is an array of ARjs.HitTestingResult = function(position, quaternion, scale){}
-	// similar intersects that three.js raycasting
-	arAnchor.applyHitTestResult(intersects[0])
-}
-
 /**
  * define a ARjs.Session
  * 
@@ -72,40 +54,3 @@ ARjs.Session = function(parameters){
 		arContext.update( arSource.domElement )
 	}
 }
-
-//////////////////////////////////////////////////////////////////////////////
-//		Hit Testing
-//////////////////////////////////////////////////////////////////////////////
-
-/**
- * Test the real world for intersections.
- * 
- * @param {Number} mouseX - position X of the hit [-1, +1]
- * @param {Number} mouseY - position Y of the hit [-1, +1]
- * @return {[ARjs.Session.HitTestResult]} - array of HitTestResult
- */
-ARjs.Session.prototype.hitTest = function(mouseX, mouseY){
-	var intersects = []
-	
-	var result = THREEx.ARClickability.tangoPickingPointCloud(this.arContext, mouseX, mouseY)
-	if( result !== null ){
-		intersects.push(new ARjs.Session.HitTestResult(result.position, result.quaternion, new THREE.Vector3(1,1,1).multiplyScalar(0.1)))
-	}
-			
-	// TODO use clickability
-	return intersects
-}
-
-/**
- * Contains the result of arSession.hitTest.
- * 
- * @param {THREE.Vector3} position - position to use
- * @param {THREE.Quaternion} quaternion - quaternion to use
- * @param {THREE.Vector3} scale - scale
- * @return {[type]} [description]
- */
-ARjs.Session.HitTestResult = function(position, quaternion, scale){
-	this.position = position
-	this.quaternion = quaternion
-	this.scale = scale
-}
diff --git a/three.js/arjs-tangopointcloud.js b/three.js/arjs-tangopointcloud.js
new file mode 100644
index 0000000000000000000000000000000000000000..5bfd960911be87471ad2fc1e10997485f7609362
--- /dev/null
+++ b/three.js/arjs-tangopointcloud.js
@@ -0,0 +1,26 @@
+// @namespace
+var ARjs = ARjs || {}
+
+ARjs.TangoPointCloud = function(arSession){
+	var _this = this
+	var arContext = arSession.arContext
+	this.object3d = new THREE.Group
+
+console.warn('Work only on cameraTransformMatrix - fix me - useless limitation')
+	
+	arContext.addEventListener('initialized', function(event){
+	        var vrPointCloud = arContext._tangoContext.vrPointCloud
+	        var geometry = vrPointCloud.getBufferGeometry()
+	        var material = new THREE.PointsMaterial({
+	                size: 0.01, 
+        		// colorWrite: false, // good for occlusion
+			depthWrite: false,
+	        })
+	        var pointsObject = new THREE.Points(geometry, material)
+	        // Points are changing all the time so calculating the frustum culling volume is not very convenient.
+	        pointsObject.frustumCulled = false;
+	        pointsObject.renderDepth = 0;
+
+		_this.object3d.add(pointsObject)
+	})
+}
diff --git a/three.js/arjs-tangovideomesh.js b/three.js/arjs-tangovideomesh.js
index 96b010f4029d0a24f39c6c6dbacbf795c0bdd7eb..7a9c774b91ea3ff9bc7eaa7cb1924403c929b2c5 100644
--- a/three.js/arjs-tangovideomesh.js
+++ b/three.js/arjs-tangovideomesh.js
@@ -25,6 +25,10 @@ ARjs.TangoVideoMesh = function(arSession){
 		sceneOrtho.add(videoMesh)
 	})
 	
+	//////////////////////////////////////////////////////////////////////////////
+	//		Code Separator
+	//////////////////////////////////////////////////////////////////////////////
+	
 	this.update = function(){
 		// sanity check
 		console.assert( arContext.parameters.trackingBackend === 'tango' )
@@ -34,6 +38,10 @@ ARjs.TangoVideoMesh = function(arSession){
 		THREE.WebAR.updateCameraMeshOrientation(vrDisplay, videoMesh)                        		
 	}
 	
+	//////////////////////////////////////////////////////////////////////////////
+	//		Code Separator
+	//////////////////////////////////////////////////////////////////////////////
+	
 	this.render = function(){
 		// sanity check
 		console.assert( arContext.parameters.trackingBackend === 'tango' )
diff --git a/three.js/arjs-utils.js b/three.js/arjs-utils.js
index 5198010b0e3ddf7c747cb7cb90a23475a81f4498..9044879914c132362c4c755fbeb05778d6b0cd0a 100644
--- a/three.js/arjs-utils.js
+++ b/three.js/arjs-utils.js
@@ -6,7 +6,8 @@ ARjs.Utils = {}
  * @param {string} trackingBackend - the tracking to user
  * @return {THREE.Camera} the created camera
  */
-ARjs.Utils.createDefaultCamera = function(trackingBackend){
+ARjs.Utils.createDefaultCamera = function(trackingMethod){
+	var trackingBackend = this.parseTrackingMethod(trackingMethod).trackingBackend
 	// Create a camera
 	if( trackingBackend === 'artoolkit' ){
 		var camera = new THREE.Camera();
@@ -28,3 +29,18 @@ ARjs.Utils.isTango = function(){
 	var isTango = navigator.userAgent.match('Chrome/57.0.2987.5') !== null ? true : false
 	return isTango
 }
+
+
+ARjs.Utils.parseTrackingMethod = function(trackingMethod){
+	if( trackingMethod.startsWith('area-') ){
+		return {
+			trackingBackend : trackingMethod.replace('area-', ''),
+			markersAreaEnabled : true,
+		}
+	}else{
+		return {
+			trackingBackend : trackingMethod,
+			markersAreaEnabled : false,
+		}
+	}
+}
diff --git a/three.js/examples/arjs-session.html b/three.js/examples/arjs-session.html
index 825333847cf2e88dc689c9d83849da3b2bcc0df5..fb6c434f1055d05660892c143197c071a332c531 100644
--- a/three.js/examples/arjs-session.html
+++ b/three.js/examples/arjs-session.html
@@ -18,12 +18,15 @@
 <script src='../arjs-utils.js'></script>
 <script src='../arjs-session.js'></script>
 <script src='../arjs-anchor.js'></script>
+<script src='../arjs-hittester.js'></script>
 <script src='../arjs-tangovideomesh.js'></script>
+<script src='../arjs-tangopointcloud.js'></script>
 <script src='../threex-artoolkitsource.js'></script>
 <script src='../threex-artoolkitcontext.js'></script>
 <script src='../threex-artoolkitprofile.js'></script>
 <script src='../threex-arbasecontrols.js'></script>
 <script src='../threex-armarkercontrols.js'></script>
+<script src='../threex-armarkerhelper.js'></script>
 <script src='../threex-arsmoothedcontrols.js'></script>
 <script src='../threex-arclickability.js'></script>
 <script>THREEx.ArToolkitContext.baseURL = '../'</script>
@@ -42,41 +45,36 @@
 	/
 	<a href='../../three.js/threex/threex-aruco/examples/images/1001.png' target='_blank'>1001 for aruco</a>
 	<br/>
-	<strong>Tracking Backend:</strong> <span id='currentTracking'>unknown</span>
+	<strong>Tracking Method:</strong> <span id='trackingMethod'>unknown</span>
 	- 
 	Switch to : 
 	<a href='#artoolkit' onclick='location.reload()'>artoolkit</a>
 	/ 
 	<a href='#aruco' onclick='location.reload()'>aruco</a>
 	/ 
+	<a href='#area-artoolkit' onclick='location.reload()'>area artoolkit</a>
+	/ 
+	<a href='#area-aruco' onclick='location.reload()'>area aruco</a>
+	/ 
 	<a href='#tango' onclick='location.reload()'>tango</a>
+	/ 
+	<a href='#best' onclick='location.reload()'>best</a>
 </div><script>
 ;(function(){
+// TODO put that in a function
+	var trackingMethod = location.hash.substring(1) ? location.hash.substring(1) : 'best'
+
+	if( trackingMethod === 'best' ){
+		var trackingMethod = ARjs.Utils.isTango() ? 'tango' : 'area-artoolkit'
+	}
 	
-	var trackingBackend = location.hash.substring(1) ? location.hash.substring(1) : 'artoolkit'
-	document.querySelector('#currentTracking').innerHTML = trackingBackend
-	
-	// if we are running on tango device, ensure trackingBackend is 'tango'
-	if( trackingBackend !== 'tango' && ARjs.Utils.isTango() === true ){
-		location.hash = '#tango'
-		location.reload()
+	if( trackingMethod.startsWith('area-') ){
+		var trackingBackend = trackingMethod.replace('area-', '')
+	}else{
+		var trackingBackend = trackingMethod
 	}
 	
-	// - aruco-area
-	// - artoolkit-area
-	// - trackingMethod=
-	// - trackingBackend=
-	// 
-	// - thus you got the whole stack available here
-	// - it dramatically reduce the boilerplate
-	// - it is the base of the aframe ar.js, the base of webar-playground
-	// - maybe put all that in a class
-	// - this is the base of a typical AR.js application - aka support all tracking transparantly
-	// 
-	
-	// TODO is that required ?
-	var changeMatrixMode = 'cameraTransformMatrix'
-	// var changeMatrixMode = 'modelViewMatrix'
+	document.querySelector('#trackingMethod').innerHTML = trackingMethod
 	
 	//////////////////////////////////////////////////////////////////////////////////
 	//		Init
@@ -89,7 +87,7 @@
 	});
 	renderer.autoClear = false;
 	renderer.setClearColor(new THREE.Color('lightgrey'), 0)
-	renderer.setSize( 640, 480 );
+	renderer.setSize( window.innerWidth, window.innerHeight );
 	renderer.domElement.style.position = 'absolute'
 	renderer.domElement.style.top = '0px'
 	renderer.domElement.style.left = '0px'
@@ -105,7 +103,7 @@
 	//		Initialize the camera
 	//////////////////////////////////////////////////////////////////////////////////
 
-	var camera = ARjs.Utils.createDefaultCamera(trackingBackend)
+	var camera = ARjs.Utils.createDefaultCamera(trackingMethod)
 	scene.add(camera);
 	
 	////////////////////////////////////////////////////////////////////////////////
@@ -114,15 +112,23 @@
 
 	var arProfile = new THREEx.ArToolkitProfile()
 		.sourceWebcam()
-		.trackingBackend(trackingBackend)
-		.defaultMarker(trackingBackend)
+		.trackingMethod(trackingMethod)
+		.defaultMarker()
 
 	// FIXME temporary placeholder - to reevaluate later
-	if( trackingBackend === 'tango' ){
+	if( trackingMethod === 'tango' ){
 		arProfile.sourceImage(THREEx.ArToolkitContext.baseURL + '../data/images/img.jpg')
 	}	
+	
+	// honor changeMatrixMode
+	arProfile.defaultMarkerParameters.changeMatrixMode = 'cameraTransformMatrix'
+	// arProfile.defaultMarkerParameters.changeMatrixMode = 'modelViewMatrix'
 
 
+	//////////////////////////////////////////////////////////////////////////////
+	//		build ARjs.Session
+	//////////////////////////////////////////////////////////////////////////////
+
 	var arSession = new ARjs.Session({
 		scene: scene,
 		renderer: renderer,
@@ -133,14 +139,10 @@
 	onRenderFcts.push(function(){
 		arSession.update()
 	})
-	var arContext = arSession.arContext
 	
 	////////////////////////////////////////////////////////////////////////////////
 	//          Create a ArMarkerControls
 	////////////////////////////////////////////////////////////////////////////////
-	
-	// honor changeMatrixMode
-	arProfile.defaultMarkerParameters.changeMatrixMode = changeMatrixMode
 
 	var arAnchor = new ARjs.Anchor(arSession, arProfile.defaultMarkerParameters)
 	onRenderFcts.push(function(){
@@ -151,22 +153,30 @@
 	//                handle videoMesh for tango
 	//////////////////////////////////////////////////////////////////////////////
 	
-	if( trackingBackend === 'tango' ){
-		var videoMeshTango = new ARjs.TangoVideoMesh(arSession)
+	if( trackingMethod === 'tango' ){
+		var tangoVideoMesh = new ARjs.TangoVideoMesh(arSession)
 		onRenderFcts.push(function(){
-			videoMeshTango.update()
+			tangoVideoMesh.update()
 		})
 	}
+	
+	if( trackingMethod === 'tango' ){
+		var tangoPointCloud = new ARjs.TangoPointCloud(arSession)
+		scene.add(tangoPointCloud.object3d)
+	}
+	
+	var hitTester = new ARjs.HitTester(arSession)
 
 	// tango only - picking to set object position
         renderer.domElement.addEventListener("click", function(event) {
+		var arContext = arSession.arContext
+		
 		if( arContext.parameters.trackingBackend !== 'tango' )	return
 
-		var mousePosition = new THREE.Vector3()
-                mousePosition.x = event.pageX / window.innerWidth
-                mousePosition.y = event.pageY / window.innerHeight
+                var mouseX = event.pageX / window.innerWidth
+                var mouseY = event.pageY / window.innerHeight
 		
-		var hitTestResults = arSession.hitTest(mousePosition.x, mousePosition.y)
+		var hitTestResults = hitTester.test(mouseX, mouseY)
 		if( hitTestResults.length === 0 )	return
 
 		var hitTestResult = hitTestResults[0]
@@ -211,8 +221,8 @@
 		renderer.clear()
 		
 		// render videoMesh for tango
-		if( arContext.parameters.trackingBackend === 'tango'){
-			videoMeshTango.render()
+		if( trackingMethod === 'tango' ){
+			tangoVideoMesh.render()
 		}
 		
 		renderer.render( scene, camera );
diff --git a/three.js/examples/boilerplate-tango.html b/three.js/examples/boilerplate-tango.html
index 9e3d0dc7b40b096ac458d38a662c111d193d60af..7db8d1465286371ef2dc5753988af985e8977f14 100644
--- a/three.js/examples/boilerplate-tango.html
+++ b/three.js/examples/boilerplate-tango.html
@@ -174,7 +174,7 @@
                 onRenderFcts.push(function(){
                         // Update the point cloud. Only if the point cloud will be shown the
                         // geometry is also updated.
-                        vrPointCloud.update(parameters.showPointCloud, parameters.pointsToSkip)                        
+                        vrPointCloud.update(parameters.showPointCloud, parameters.pointsToSkip, true)                        
                 })
                 // handle datGUI
                 datGUI.add(parameters, 'showPointCloud').onFinishChange(function(value) {
diff --git a/three.js/threex-arclickability.js b/three.js/threex-arclickability.js
index 255fd5d3bc78ef765cab3ad27e4f0e0896219ede..717009b6733e3e52487e476c0e3818c8d661015b 100644
--- a/three.js/threex-arclickability.js
+++ b/three.js/threex-arclickability.js
@@ -1,5 +1,7 @@
 var THREEx = THREEx || {}
 
+// TODO this is useless - prefere arjs-hittester.js
+
 /**
  * - maybe support .onClickFcts in each object3d
  * - seems an easy light layer for clickable object
@@ -11,6 +13,8 @@ THREEx.ARClickability = function(sourceElement){
 	var fullWidth = parseInt(sourceElement.style.width)
 	var fullHeight = parseInt(sourceElement.style.height)
 	this._cameraPicking = new THREE.PerspectiveCamera(42, fullWidth / fullHeight, 0.1, 100);	
+
+console.warn('THREEx.ARClickability works only in modelViewMatrix')
 }
 
 THREEx.ARClickability.prototype.onResize = function(){
@@ -50,7 +54,7 @@ THREEx.ARClickability.prototype.update = function(){
 
 THREEx.ARClickability.tangoPickingPointCloud = function(artoolkitContext, mouseX, mouseY){
 	var vrDisplay = artoolkitContext._tangoContext.vrDisplay
-        if (vrDisplay === null ) return
+        if (vrDisplay === null ) return null
         var pointAndPlane = vrDisplay.getPickingPointAndPlaneInPointCloud(mouseX, mouseY)
         if( pointAndPlane == null ) {
                 console.warn('Could not retrieve the correct point and plane.')
diff --git a/three.js/threex-artoolkitprofile.js b/three.js/threex-artoolkitprofile.js
index 320e51686e0fd4ebe43708fd3cf901c3e738d42d..6595d1cc6ca4762c30c56fd5fcfe7ef700c9903f 100644
--- a/three.js/threex-artoolkitprofile.js
+++ b/three.js/threex-artoolkitprofile.js
@@ -48,7 +48,8 @@ THREEx.ArToolkitProfile.prototype.reset = function () {
 	}
 	this.defaultMarkerParameters = {
 		type : 'pattern',
-		patternUrl : THREEx.ArToolkitContext.baseURL + '../data/data/patt.hiro'
+		patternUrl : THREEx.ArToolkitContext.baseURL + '../data/data/patt.hiro',
+		changeMatrixMode: 'modelViewMatrix',
 	}
 	return this
 };
@@ -139,6 +140,26 @@ THREEx.ArToolkitProfile.prototype.sourceImage = function (url) {
 //		trackingBackend
 //////////////////////////////////////////////////////////////////////////////
 THREEx.ArToolkitProfile.prototype.trackingBackend = function (trackingBackend) {
+	console.warn('use profile.trackingBackend() obsolete function')
+	this.contextParameters.trackingBackend = trackingBackend
+	return this
+}
+
+
+//////////////////////////////////////////////////////////////////////////////
+//		trackingBackend
+//////////////////////////////////////////////////////////////////////////////
+THREEx.ArToolkitProfile.prototype.trackingMethod = function (trackingMethod) {
+
+	if( trackingMethod.startsWith('area-') ){
+		var trackingBackend = trackingMethod.replace('area-', '')
+		var markersAreaEnabled = true
+	}else{
+		var trackingBackend = trackingMethod
+		var markersAreaEnabled = false
+	}
+
+	this.defaultMarkerParameters.markersAreaEnabled = markersAreaEnabled
 	this.contextParameters.trackingBackend = trackingBackend
 	return this
 }