diff --git a/PointCloudWeb.Server/PointCloudWeb.Server/Controllers/ScanDataController.cs b/PointCloudWeb.Server/PointCloudWeb.Server/Controllers/ScanDataController.cs
index b2538c9..2d5e860 100644
--- a/PointCloudWeb.Server/PointCloudWeb.Server/Controllers/ScanDataController.cs
+++ b/PointCloudWeb.Server/PointCloudWeb.Server/Controllers/ScanDataController.cs
@@ -7,22 +7,23 @@ namespace PointCloudWeb.Server.Controllers
 {
     [ApiController]
     [Route("[controller]")]
-    public class DataController : ControllerBase
+    public class ScanDataController : ControllerBase
     {
         private readonly ScanDataService _scanDataService;
 
-        public DataController(ScanDataService scanDataService)
+        public ScanDataController(ScanDataService scanDataService)
         {
-            this._scanDataService = scanDataService;
-        }
-
-        [HttpPost]
-        public void PostScanData([FromBody] ScanDataList data)
-        {
-            _scanDataService.AddScan(data);
+            _scanDataService = scanDataService;
         }
 
         [HttpPut]
+        public void SendScanData([FromBody] ScanDataList data)
+        {
+            _scanDataService.AddScanData(data);
+        }
+
+        [HttpPut]
+        [Route("finished/{id:Guid}")]
         public void ScanFinished(Guid id)
         {
             _scanDataService.ScanFinished(id);
diff --git a/PointCloudWeb.Server/PointCloudWeb.Server/Models/PointCloud.cs b/PointCloudWeb.Server/PointCloudWeb.Server/Models/PointCloud.cs
index 0a44f99..7fe2930 100644
--- a/PointCloudWeb.Server/PointCloudWeb.Server/Models/PointCloud.cs
+++ b/PointCloudWeb.Server/PointCloudWeb.Server/Models/PointCloud.cs
@@ -5,6 +5,7 @@ using System.Collections.ObjectModel;
 using System.Collections.Specialized;
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
 using System.IO;
 using System.Numerics;
 using System.Text;
@@ -112,7 +113,13 @@ namespace PointCloudWeb.Server.Models
             var stringBuilder = new StringBuilder();
             foreach (var point in _points)
             {
-                stringBuilder.AppendLine(string.Join(',', point.X, point.Y, point.Z));
+                // + 0.001 Otherwise points are outside of the bounding box by a floating-error, then Potree-Converter fails
+                stringBuilder.AppendLine(string.Join(',', 
+                    (point.X + 0.001).ToString(CultureInfo.InvariantCulture), 
+                    (point.Y + 0.001).ToString(CultureInfo.InvariantCulture), 
+                    (point.Z + 0.001).ToString(CultureInfo.InvariantCulture)
+                    )
+                );
             }
 
             return stringBuilder.ToString();
@@ -148,14 +155,14 @@ namespace PointCloudWeb.Server.Models
             return pc;
         }
 
-        public bool Contains(Guid id)
+        public bool Contains(Guid? id)
         {
             return GetById(id) != null;
         }
 
-        public PointCloud GetById(Guid id)
+        public PointCloud GetById(Guid? id)
         {
-            return Find(pc => pc.Id == id);
+            return id == null ? null : Find(pc => pc.Id == id);
         }
 
         public void RemoveById(Guid id)
diff --git a/PointCloudWeb.Server/PointCloudWeb.Server/Services/PointCloudService.cs b/PointCloudWeb.Server/PointCloudWeb.Server/Services/PointCloudService.cs
index abc34d5..75f3a75 100644
--- a/PointCloudWeb.Server/PointCloudWeb.Server/Services/PointCloudService.cs
+++ b/PointCloudWeb.Server/PointCloudWeb.Server/Services/PointCloudService.cs
@@ -23,7 +23,7 @@ namespace PointCloudWeb.Server.Services
         {
             var pathTarget = Globals.PotreeDataPath + $"/{id.ToString()}";
             var tempFile = Globals.TempPath + $"/{id}.las";
-            
+
             var pc = _pointClouds.GetById(id);
             pc.WriteToLas(tempFile);
 
@@ -47,19 +47,24 @@ namespace PointCloudWeb.Server.Services
                 throw new ArgumentOutOfRangeException($"The Id {id.ToString()} was not found!");
         }
 
-        public void AddPoints(Guid id, IList<Point> points)
+        public void AddPoints(Guid id, IEnumerable<Point> points)
         {
-            RaiseIfNotExists(id);
-
-            var pc = _pointClouds.GetById(id);
+            var pc = _pointClouds.GetById(id)
+                     ?? AddPointCloud(id);
 
             foreach (var point in points)
-                pc.Points.Add(point);
+            {
+                if (point.X != 0 || point.Y != 0 || point.Z != 0)
+                    pc.Points.Add(point);
+            }
         }
 
-        public PointCloud AddPointCloud()
+        public PointCloud AddPointCloud(Guid? id = null)
         {
-            var pc = new PointCloud(Guid.NewGuid(), "");
+            if (id != null && _pointClouds.Contains(id))
+                throw new ArgumentOutOfRangeException($"Add of existing id \"{id}\" not possible!");
+
+            var pc = new PointCloud(id ?? Guid.NewGuid(), $"Scan #{_pointClouds.Count + 1}");
             _pointClouds.Add(pc);
             return pc;
         }
diff --git a/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanConverterService.cs b/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanConverterService.cs
index 4fc2464..dea50ed 100644
--- a/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanConverterService.cs
+++ b/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanConverterService.cs
@@ -62,17 +62,17 @@ namespace PointCloudWeb.Server.Services
                 Y = factorY * NumericUtils.Round(z * sinXb / sinXa),
                 Z = factorZ * NumericUtils.Round(z)
             };
-            return p;
+            //return p;
 
             //https://stackoverflow.com/questions/52781607/3d-point-from-two-angles-and-a-distance
-            var pitch = radYa;
-            var yaw = radXa;
+            var beta = radYa;
+            var alpha = radXa;
 
             p = new Point
             {
-                X = (int) (scan.DistanceMM * Math.Sin(yaw) * Math.Cos(pitch)),
-                Y = (int) (scan.DistanceMM * Math.Sin(pitch)),
-                Z = (int) (scan.DistanceMM * Math.Cos(yaw) * Math.Cos(pitch))
+                Y = (int)(scan.DistanceMM * Math.Sin(alpha)),
+                X = (int)(scan.DistanceMM * Math.Cos(beta) * Math.Cos(alpha)),
+                Z = (int)(scan.DistanceMM * Math.Sin(beta) * Math.Cos(alpha))
             };
 
             return p;
diff --git a/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanDataService.cs b/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanDataService.cs
index 35c37d5..95a2b8a 100644
--- a/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanDataService.cs
+++ b/PointCloudWeb.Server/PointCloudWeb.Server/Services/ScanDataService.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using PointCloudWeb.Server.Models;
 
 namespace PointCloudWeb.Server.Services
@@ -13,26 +14,13 @@ namespace PointCloudWeb.Server.Services
             _pointCloudService = pointCloudService;
         }
 
-        private IList<Point> ConvertToPoints(ScanDataList scanData)
-        {
-            var list = new List<Point>();
+        private static IEnumerable<Point> ConvertToPoints(ScanDataList scanData)
+            => scanData.ScanPoints.Select(ScanConverterService.Transform).ToList();
 
-            foreach (var scan in scanData.ScanPoints)
-            {
-                list.Add(ScanConverterService.Transform(scan));
-            }
-
-            return list;
-        }
-
-        public void AddScan(ScanDataList scanData)
-        {
-            _pointCloudService.AddPoints(scanData.Id, ConvertToPoints(scanData));
-        }
+        public void AddScanData(ScanDataList scanData)
+            => _pointCloudService.AddPoints(scanData.Id, ConvertToPoints(scanData));
 
         public void ScanFinished(Guid id)
-        {
-            _pointCloudService.PointCloudCompleted(id);
-        }
+            => _pointCloudService.PointCloudCompleted(id);
     }
 }
\ No newline at end of file