diff --git a/api/rest-api.go b/api/rest-api.go
index 7702bb1..2112116 100644
--- a/api/rest-api.go
+++ b/api/rest-api.go
@@ -32,10 +32,10 @@ type UserClaims struct {
 }
 
 type weatherRestApi struct {
+	weathersource.WeatherSourceBase
 	connection     string
 	config         config.RestConfig
 	weaterStorage  storage.WeatherStorage
-	weatherSource  weathersource.WeatherSourceBase
 	sensorRegistry storage.SensorRegistry
 }
 
@@ -157,7 +157,7 @@ func (api *weatherRestApi) addWeatherDataHandler(w http.ResponseWriter, r *http.
 		return
 	}
 
-	api.addNewWeatherData(*weatherData)
+	api.NewWeatherData(weatherData)
 
 	w.Header().Add("content-type", "application/json")
 	w.WriteHeader(http.StatusCreated)
@@ -336,12 +336,3 @@ func (api *weatherRestApi) parseToken(header http.Header) (*UserClaims, error) {
 	)
 	return claims, err
 }
-
-//AddNewWeatherDataCallback adds a new callbackMethod for incoming weather data
-func (api *weatherRestApi) AddNewWeatherDataCallback(callback weathersource.NewWeatherDataCallbackFunc) {
-	api.weatherSource.AddNewWeatherDataCallback(callback)
-}
-
-func (api *weatherRestApi) addNewWeatherData(weatherData storage.WeatherData) {
-	api.weatherSource.NewWeatherData(weatherData)
-}
diff --git a/main.go b/main.go
index 7259589..ffd0c54 100644
--- a/main.go
+++ b/main.go
@@ -35,23 +35,24 @@ func main() {
 		log.Fatal(err)
 	}
 	defer weatherSource.Close()
-	weatherSource.AddNewWeatherDataCallback(handleNewWeatherData)
+	weatherSource.OnNewWeatherData(handleNewWeatherData)
 
 	//setup a API -> REST
 	weatherAPI = api.NewRestAPI(":10000", weatherStorage, sensorRegistry, config.RestConfiguration)
 	defer weatherAPI.Close()
-	weatherAPI.AddNewWeatherDataCallback(handleNewWeatherData)
+	weatherAPI.OnNewWeatherData(handleNewWeatherData)
 
+	log.Print("Application is running")
 	err = weatherAPI.Start()
 	if err != nil {
 		log.Fatal(err)
 	}
-	log.Print("Application is running")
 }
 
-func handleNewWeatherData(wd storage.WeatherData) {
-	_, err := sensorRegistry.GetSensor(wd.SensorId)
-	if config.AllowUnregisteredSensors || err == nil {
+func handleNewWeatherData(wd *storage.WeatherData) {
+	if config.AllowUnregisteredSensors {
+		weatherStorage.Save(wd)
+	} else if exist, err := sensorRegistry.ExistSensor(wd.SensorId); err == nil && exist {
 		weatherStorage.Save(wd)
 	}
 }
diff --git a/storage/influxdb-storage.go b/storage/influxdb-storage.go
index 85ecfe1..4b9780e 100644
--- a/storage/influxdb-storage.go
+++ b/storage/influxdb-storage.go
@@ -31,7 +31,7 @@ func NewInfluxStorage(cfg config.InfluxConfig) (*influxStorage, error) {
 }
 
 //Save WeatherData to InfluxDB
-func (storage *influxStorage) Save(data WeatherData) error {
+func (storage *influxStorage) Save(data *WeatherData) error {
 	tags := map[string]string{
 		"sensorId": data.SensorId.String()}
 
diff --git a/storage/weather-storage.go b/storage/weather-storage.go
index c274fa2..5da8198 100644
--- a/storage/weather-storage.go
+++ b/storage/weather-storage.go
@@ -2,7 +2,7 @@ package storage
 
 //WeatherStorage interface for different storage-implementations of weather data
 type WeatherStorage interface {
-	Save(WeatherData) error
+	Save(*WeatherData) error
 	GetData(*WeatherQuery) ([]*WeatherData, error)
 	Close() error
 }
diff --git a/weathersource/mqtt-source.go b/weathersource/mqtt-source.go
index 8ed79a6..e02d91e 100644
--- a/weathersource/mqtt-source.go
+++ b/weathersource/mqtt-source.go
@@ -20,9 +20,9 @@ var regexTopic *regexp.Regexp = regexp.MustCompile(mqttTopicRegexPattern)
 var channelBufferSize = 10
 
 type mqttWeatherSource struct {
+	WeatherSourceBase
 	config                   config.MqttConfig
 	mqttClient               mqtt.Client
-	weatherSource            WeatherSourceBase
 	activeSensorMeasurements map[uuid.UUID](chan map[storage.SensorValueType]float64)
 	sensorMutex              sync.RWMutex
 }
@@ -127,14 +127,5 @@ func (source *mqttWeatherSource) publishSensorMeasurement(sensorId uuid.UUID, ch
 		}
 	}
 
-	source.newWeatherData(*weatherData)
-}
-
-//AddNewWeatherDataCallback adds a new callbackMethod for incoming weather data
-func (source *mqttWeatherSource) AddNewWeatherDataCallback(callback NewWeatherDataCallbackFunc) {
-	source.weatherSource.AddNewWeatherDataCallback(callback)
-}
-
-func (source *mqttWeatherSource) newWeatherData(datapoint storage.WeatherData) {
-	source.weatherSource.NewWeatherData(datapoint)
+	source.NewWeatherData(weatherData)
 }
diff --git a/weathersource/weather-source-base.go b/weathersource/weather-source-base.go
deleted file mode 100644
index 347b8b4..0000000
--- a/weathersource/weather-source-base.go
+++ /dev/null
@@ -1,20 +0,0 @@
-package weathersource
-
-import "weather-data/storage"
-
-//WeatherSourceBase is the lowlevel-implementation of the WeatherSource interface, intended to used by highlevel-implementations
-type WeatherSourceBase struct {
-	newWeatherDataCallbackFuncs []NewWeatherDataCallbackFunc
-}
-
-//AddNewWeatherDataCallback adds a new callbackMethod for incoming weather data
-func (source *WeatherSourceBase) AddNewWeatherDataCallback(callback NewWeatherDataCallbackFunc) {
-	source.newWeatherDataCallbackFuncs = append(source.newWeatherDataCallbackFuncs, callback)
-}
-
-//NewWeatherData executes all newWeatherDataCallbackFuncs for this datapoint
-func (source *WeatherSourceBase) NewWeatherData(datapoint storage.WeatherData) {
-	for _, callback := range source.newWeatherDataCallbackFuncs {
-		callback(datapoint)
-	}
-}
diff --git a/weathersource/weather-source.go b/weathersource/weather-source.go
index 8930434..aed75dc 100644
--- a/weathersource/weather-source.go
+++ b/weathersource/weather-source.go
@@ -2,11 +2,28 @@ package weathersource
 
 import "weather-data/storage"
 
-//NewWeatherDataCallbackFunc Function-Signature for new weather data callback function
-type NewWeatherDataCallbackFunc func(storage.WeatherData)
+//NewWeatherDataFunc Function-Signature for new weather data
+type NewWeatherDataFunc func(*storage.WeatherData)
 
 //WeatherSource is the interface for different weather-source implementations
 type WeatherSource interface {
-	AddNewWeatherDataCallback(NewWeatherDataCallbackFunc)
+	OnNewWeatherData(callback NewWeatherDataFunc)
 	Close()
 }
+
+//WeatherSourceBase is the lowlevel-implementation of the WeatherSource interface, intended to used by highlevel-implementations
+type WeatherSourceBase struct {
+	onNewWeatherDataFunctions []NewWeatherDataFunc
+}
+
+//OnNewWeatherData add a function executed on NewWeatherData called
+func (source *WeatherSourceBase) OnNewWeatherData(callback NewWeatherDataFunc) {
+	source.onNewWeatherDataFunctions = append(source.onNewWeatherDataFunctions, callback)
+}
+
+//NewWeatherData executes all NewWeatherDataFunc for the weatherData
+func (source *WeatherSourceBase) NewWeatherData(weatherData *storage.WeatherData) {
+	for _, function := range source.onNewWeatherDataFunctions {
+		function(weatherData)
+	}
+}