diff --git a/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java b/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java
index cb7ac06b..2bef4f07 100644
--- a/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java
+++ b/android_app/app/src/main/java/com/health/openscale/core/OpenScale.java
@@ -181,6 +181,7 @@ public class OpenScale {
                 scaleData.setUserId(getSelectedScaleUser().id);
             }
 
+            // don't add scale data if no user is selected
             if (scaleData.getUserId() == -1) {
                 return -1;
             }
@@ -215,6 +216,14 @@ public class OpenScale {
             return inRangeWeights.entrySet().iterator().next().getValue();
         }
 
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+
+        // if ignore out of range preference is true don't add this data
+        if (prefs.getBoolean("ignoreOfOutRange", false)) {
+            return -1;
+        }
+
+        // return selected scale user id if not out of range preference is checked and weight is out of range of any user
         return getSelectedScaleUser().id;
     }
 
diff --git a/android_app/app/src/main/java/com/health/openscale/gui/preferences/BluetoothPreferences.java b/android_app/app/src/main/java/com/health/openscale/gui/preferences/BluetoothPreferences.java
index d04618e2..11103e6a 100644
--- a/android_app/app/src/main/java/com/health/openscale/gui/preferences/BluetoothPreferences.java
+++ b/android_app/app/src/main/java/com/health/openscale/gui/preferences/BluetoothPreferences.java
@@ -17,6 +17,7 @@ package com.health.openscale.gui.preferences;
 
 import android.content.SharedPreferences;
 import android.os.Bundle;
+import android.preference.CheckBoxPreference;
 import android.preference.EditTextPreference;
 import android.preference.ListPreference;
 import android.preference.MultiSelectListPreference;
@@ -33,10 +34,16 @@ import java.util.Set;
 
 public class BluetoothPreferences extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener {
 
-    String[] btDeviceSupportInit;
-    String[] btDeviceSupportDataTransfer;
-    String[] btDeviceSupportDataHistory;
-    String[] btDeviceDefaultName;
+    public static final String PREFERENCE_KEY_BLUETOOTH_SMARTUSERASSIGN = "smartUserAssign";
+    private static final String PREFERENCE_KEY_BLUETOOTH_IGNOREOUTOFRANGE = "ignoreOutOfRange";
+
+    private CheckBoxPreference smartAssignEnable;
+    private CheckBoxPreference ignoreOutOfRangeEnable;
+
+    private String[] btDeviceSupportInit;
+    private String[] btDeviceSupportDataTransfer;
+    private String[] btDeviceSupportDataHistory;
+    private String[] btDeviceDefaultName;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -44,6 +51,9 @@ public class BluetoothPreferences extends PreferenceFragment implements SharedPr
 
         addPreferencesFromResource(R.xml.bluetooth_preferences);
 
+        smartAssignEnable = (CheckBoxPreference) findPreference(PREFERENCE_KEY_BLUETOOTH_SMARTUSERASSIGN);
+        ignoreOutOfRangeEnable = (CheckBoxPreference) findPreference(PREFERENCE_KEY_BLUETOOTH_IGNOREOUTOFRANGE);
+
         btDeviceSupportInit = getResources().getStringArray(R.array.bt_device_support_initializing);
         btDeviceSupportDataTransfer = getResources().getStringArray(R.array.bt_device_support_data_transfer);
         btDeviceSupportDataHistory = getResources().getStringArray(R.array.bt_device_support_data_history);
@@ -82,6 +92,12 @@ public class BluetoothPreferences extends PreferenceFragment implements SharedPr
     }
 
     private void updatePrefSummary(Preference p) {
+        if (smartAssignEnable.isChecked()) {
+            ignoreOutOfRangeEnable.setEnabled(true);
+        } else {
+            ignoreOutOfRangeEnable.setEnabled(false);
+        }
+
         if (p instanceof ListPreference) {
             ListPreference listPref = (ListPreference) p;
 
diff --git a/android_app/app/src/main/res/values-de/strings.xml b/android_app/app/src/main/res/values-de/strings.xml
index e7a9158d..4af152c4 100644
--- a/android_app/app/src/main/res/values-de/strings.xml
+++ b/android_app/app/src/main/res/values-de/strings.xml
@@ -126,4 +126,5 @@
     <string name="label_importBackup">Importiere Datensicherung</string>
     <string name="label_export_dir">Export Ordner</string>
     <string name="label_not_found">nicht gefunden</string>
+    <string name="label_ignoreOutOfRange">Ignoriere Daten außerhalb des zulässigen Bereiches</string>
 </resources>
\ No newline at end of file
diff --git a/android_app/app/src/main/res/values/strings.xml b/android_app/app/src/main/res/values/strings.xml
index 4133e10c..ebdaee28 100644
--- a/android_app/app/src/main/res/values/strings.xml
+++ b/android_app/app/src/main/res/values/strings.xml
@@ -145,4 +145,5 @@
     <string name="label_backup">Backup</string>
     <string name="label_export_dir">Export dir</string>
     <string name="label_not_found">not found</string>
+    <string name="label_ignoreOutOfRange">Ignore data that are out of range</string>
 </resources>
diff --git a/android_app/app/src/main/res/xml/bluetooth_preferences.xml b/android_app/app/src/main/res/xml/bluetooth_preferences.xml
index 4af0b824..f6281199 100644
--- a/android_app/app/src/main/res/xml/bluetooth_preferences.xml
+++ b/android_app/app/src/main/res/xml/bluetooth_preferences.xml
@@ -4,4 +4,5 @@
         <EditTextPreference android:title="@string/label_device_name" android:key="btDeviceName" android:defaultValue="MI_SCALE" />
         <CheckBoxPreference android:title="@string/label_bluetooth_enable" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable" android:key="btEnable" android:defaultValue="false"/>
         <CheckBoxPreference android:title="@string/label_smartUserAssign" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="smartUserAssign" android:defaultValue="false"/>
+        <CheckBoxPreference android:title="@string/label_ignoreOutOfRange" android:summaryOn="@string/info_is_enable" android:summaryOff="@string/info_is_not_enable"  android:key="ignoreOutOfRange" android:enabled="false" android:defaultValue="false"/>
 </PreferenceScreen>
\ No newline at end of file