diff --git a/android/src/main/java/cz/dronetag/flutter_opendroneid/Pigeon.java b/android/src/main/java/cz/dronetag/flutter_opendroneid/Pigeon.java
index 7dd778f..3d0b020 100644
--- a/android/src/main/java/cz/dronetag/flutter_opendroneid/Pigeon.java
+++ b/android/src/main/java/cz/dronetag/flutter_opendroneid/Pigeon.java
@@ -658,7 +658,7 @@ protected void writeValue(@NonNull ByteArrayOutputStream stream, Object value) {
   public interface PayloadApi {
 
     @NonNull 
-    ODIDPayload getPayload(@NonNull byte[] rawData, @NonNull MessageSource source, @NonNull String macAddress, @NonNull Long rssi, @NonNull Long receivedTimestamp);
+    ODIDPayload buildPayload(@NonNull byte[] rawData, @NonNull MessageSource source, @NonNull String macAddress, @NonNull Long rssi, @NonNull Long receivedTimestamp);
 
     /** The codec used by PayloadApi. */
     static @NonNull MessageCodec<Object> getCodec() {
@@ -669,7 +669,7 @@ static void setup(@NonNull BinaryMessenger binaryMessenger, @Nullable PayloadApi
       {
         BasicMessageChannel<Object> channel =
             new BasicMessageChannel<>(
-                binaryMessenger, "dev.flutter.pigeon.flutter_opendroneid.PayloadApi.getPayload", getCodec());
+                binaryMessenger, "dev.flutter.pigeon.flutter_opendroneid.PayloadApi.buildPayload", getCodec());
         if (api != null) {
           channel.setMessageHandler(
               (message, reply) -> {
@@ -681,7 +681,7 @@ static void setup(@NonNull BinaryMessenger binaryMessenger, @Nullable PayloadApi
                 Number rssiArg = (Number) args.get(3);
                 Number receivedTimestampArg = (Number) args.get(4);
                 try {
-                  ODIDPayload output = api.getPayload(rawDataArg, sourceArg, macAddressArg, (rssiArg == null) ? null : rssiArg.longValue(), (receivedTimestampArg == null) ? null : receivedTimestampArg.longValue());
+                  ODIDPayload output = api.buildPayload(rawDataArg, sourceArg, macAddressArg, (rssiArg == null) ? null : rssiArg.longValue(), (receivedTimestampArg == null) ? null : receivedTimestampArg.longValue());
                   wrapped.add(0, output);
                 }
  catch (Throwable exception) {
diff --git a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/BluetoothScanner.kt b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/BluetoothScanner.kt
index 6ee3b00..11f3665 100644
--- a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/BluetoothScanner.kt
+++ b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/BluetoothScanner.kt
@@ -18,6 +18,12 @@ class BluetoothScanner(
     odidPayloadStreamHandler: StreamHandler,
     private val bluetoothStateHandler: StreamHandler,
 ) : ODIDScanner(odidPayloadStreamHandler) {
+
+    companion object {
+        const val BT_OFFSET = 6
+        const val MAX_BLE_ADV_SIZE = 31
+    }
+
     private val TAG: String = BluetoothScanner::class.java.getSimpleName()
     private val bluetoothAdapter = BluetoothAdapter.getDefaultAdapter()
 
diff --git a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/ODIDScanner.kt b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/ODIDScanner.kt
index 8f776b6..b7d5dbe 100644
--- a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/ODIDScanner.kt
+++ b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/ODIDScanner.kt
@@ -4,7 +4,7 @@ import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
 
-/// Contains common functinality for ODID scanners 
+/// Contains common functinality for ODID scanners.
 /// Derived scanners should use receiveData method that takes raw data and metadata
 /// and sends it to stream
 /// Creates [ODIDPayload] instances implementing Pigeon PayloadAPI
@@ -14,10 +14,6 @@ abstract class ODIDScanner(
 
     companion object {
         const val MAX_MESSAGE_SIZE = 25
-        const val BT_OFFSET = 6
-        const val MAX_BLE_ADV_SIZE = 31
-        const val WIFI_BEACON_OFFSET = 5
-        const val WIFI_NAN_OFFSET = 1
     }
 
     var isScanning = false
@@ -38,7 +34,7 @@ abstract class ODIDScanner(
 
     abstract fun onAdapterStateReceived()
 
-    override fun getPayload(rawData: ByteArray, source: Pigeon.MessageSource, macAddress: String, rssi: Long, receivedTimestamp: Long): Pigeon.ODIDPayload {
+    override fun buildPayload(rawData: ByteArray, source: Pigeon.MessageSource, macAddress: String, rssi: Long, receivedTimestamp: Long): Pigeon.ODIDPayload {
         val builder = Pigeon.ODIDPayload.Builder()
 
         builder.setRawData(rawData)
@@ -54,7 +50,7 @@ abstract class ODIDScanner(
     fun receiveData(
         data: ByteArray, macAddress: String, source: Pigeon.MessageSource, rssi: Long = 0
     ) {
-        val payload = getPayload(
+        val payload = buildPayload(
             data, source, macAddress, rssi, System.currentTimeMillis()
         )
 
diff --git a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiNaNScanner.kt b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiNaNScanner.kt
index 34561c9..ea85e04 100644
--- a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiNaNScanner.kt
+++ b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiNaNScanner.kt
@@ -32,6 +32,11 @@ class WifiNaNScanner (
     private val wifiAwareManager: WifiAwareManager?,
     private val context: Context
 )  : ODIDScanner(odidPayloadStreamHandler) {
+
+    companion object {
+        const val WIFI_NAN_OFFSET = 1
+    }
+
     private val TAG: String = WifiNaNScanner::class.java.getSimpleName()
     private val wifiScanEnabled = true
     private var wifiAwareSupported = true
diff --git a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiScanner.kt b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiScanner.kt
index 8d38044..d13bf8e 100644
--- a/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiScanner.kt
+++ b/android/src/main/kotlin/cz/dronetag/flutter_opendroneid/scanner/WifiScanner.kt
@@ -25,6 +25,11 @@ class WifiScanner (
     private val wifiManager: WifiManager?,
     private val context: Context
 ) : ODIDScanner(odidPayloadStreamHandler) {
+
+    companion object {
+        const val WIFI_BEACON_OFFSET = 5
+    }
+
     private val TAG: String = WifiScanner::class.java.getSimpleName()
     private val CIDLen = 3
     private val DRICID = intArrayOf(0xFA, 0x0B, 0xBC)
diff --git a/ios/Classes/Scanner/BluetoothScanner.swift b/ios/Classes/Scanner/BluetoothScanner.swift
index 39f6f0a..c392f2e 100644
--- a/ios/Classes/Scanner/BluetoothScanner.swift
+++ b/ios/Classes/Scanner/BluetoothScanner.swift
@@ -95,7 +95,7 @@ class BluetoothScanner: NSObject, CBCentralManagerDelegate, DTGPayloadApi {
         )    
     }
     
-    func getPayloadRawData(_ rawData: FlutterStandardTypedData, source: DTGMessageSource, macAddress: String, rssi: NSNumber, receivedTimestamp: NSNumber, error: AutoreleasingUnsafeMutablePointer<FlutterError?>) -> DTGODIDPayload? {
+    func buildPayloadRawData(_ rawData: FlutterStandardTypedData, source: DTGMessageSource, macAddress: String, rssi: NSNumber, receivedTimestamp: NSNumber, error: AutoreleasingUnsafeMutablePointer<FlutterError?>) -> DTGODIDPayload? {
         return DTGODIDPayload.make(withRawData: rawData, receivedTimestamp: receivedTimestamp, macAddress: macAddress, rssi: rssi, source: source)
     }
 
@@ -106,7 +106,7 @@ class BluetoothScanner: NSObject, CBCentralManagerDelegate, DTGPayloadApi {
         }
         var err: FlutterError?
         let systimestamp = Int(Date().timeIntervalSince1970 * 1000)
-        let payload = getPayloadRawData(data, source: DTGMessageSource.bluetoothLegacy, macAddress: peripheral.identifier.uuidString, rssi: RSSI.intValue as NSNumber, receivedTimestamp: systimestamp as NSNumber, error: &err)
+        let payload = buildPayloadRawData(data, source: DTGMessageSource.bluetoothLegacy, macAddress: peripheral.identifier.uuidString, rssi: RSSI.intValue as NSNumber, receivedTimestamp: systimestamp as NSNumber, error: &err)
 
         odidPayloadStreamHandler.send(payload!.toList() as Any)
     }
diff --git a/ios/Classes/pigeon.h b/ios/Classes/pigeon.h
index 9165fa6..6cfb743 100644
--- a/ios/Classes/pigeon.h
+++ b/ios/Classes/pigeon.h
@@ -87,7 +87,7 @@ NSObject<FlutterMessageCodec> *DTGPayloadApiGetCodec(void);
 
 @protocol DTGPayloadApi
 /// @return `nil` only when `error != nil`.
-- (nullable DTGODIDPayload *)getPayloadRawData:(FlutterStandardTypedData *)rawData source:(DTGMessageSource)source macAddress:(NSString *)macAddress rssi:(NSNumber *)rssi receivedTimestamp:(NSNumber *)receivedTimestamp error:(FlutterError *_Nullable *_Nonnull)error;
+- (nullable DTGODIDPayload *)buildPayloadRawData:(FlutterStandardTypedData *)rawData source:(DTGMessageSource)source macAddress:(NSString *)macAddress rssi:(NSNumber *)rssi receivedTimestamp:(NSNumber *)receivedTimestamp error:(FlutterError *_Nullable *_Nonnull)error;
 @end
 
 extern void DTGPayloadApiSetup(id<FlutterBinaryMessenger> binaryMessenger, NSObject<DTGPayloadApi> *_Nullable api);
diff --git a/ios/Classes/pigeon.m b/ios/Classes/pigeon.m
index 1fb85a7..f7350ff 100644
--- a/ios/Classes/pigeon.m
+++ b/ios/Classes/pigeon.m
@@ -337,11 +337,11 @@ void DTGPayloadApiSetup(id<FlutterBinaryMessenger> binaryMessenger, NSObject<DTG
   {
     FlutterBasicMessageChannel *channel =
       [[FlutterBasicMessageChannel alloc]
-        initWithName:@"dev.flutter.pigeon.flutter_opendroneid.PayloadApi.getPayload"
+        initWithName:@"dev.flutter.pigeon.flutter_opendroneid.PayloadApi.buildPayload"
         binaryMessenger:binaryMessenger
         codec:DTGPayloadApiGetCodec()];
     if (api) {
-      NSCAssert([api respondsToSelector:@selector(getPayloadRawData:source:macAddress:rssi:receivedTimestamp:error:)], @"DTGPayloadApi api (%@) doesn't respond to @selector(getPayloadRawData:source:macAddress:rssi:receivedTimestamp:error:)", api);
+      NSCAssert([api respondsToSelector:@selector(buildPayloadRawData:source:macAddress:rssi:receivedTimestamp:error:)], @"DTGPayloadApi api (%@) doesn't respond to @selector(buildPayloadRawData:source:macAddress:rssi:receivedTimestamp:error:)", api);
       [channel setMessageHandler:^(id _Nullable message, FlutterReply callback) {
         NSArray *args = message;
         FlutterStandardTypedData *arg_rawData = GetNullableObjectAtIndex(args, 0);
@@ -350,7 +350,7 @@ void DTGPayloadApiSetup(id<FlutterBinaryMessenger> binaryMessenger, NSObject<DTG
         NSNumber *arg_rssi = GetNullableObjectAtIndex(args, 3);
         NSNumber *arg_receivedTimestamp = GetNullableObjectAtIndex(args, 4);
         FlutterError *error;
-        DTGODIDPayload *output = [api getPayloadRawData:arg_rawData source:arg_source macAddress:arg_macAddress rssi:arg_rssi receivedTimestamp:arg_receivedTimestamp error:&error];
+        DTGODIDPayload *output = [api buildPayloadRawData:arg_rawData source:arg_source macAddress:arg_macAddress rssi:arg_rssi receivedTimestamp:arg_receivedTimestamp error:&error];
         callback(wrapResult(output, error));
       }];
     } else {
diff --git a/lib/models/message_container.dart b/lib/models/message_container.dart
index 7b8e357..ba486e2 100644
--- a/lib/models/message_container.dart
+++ b/lib/models/message_container.dart
@@ -3,6 +3,9 @@ import 'package:flutter_opendroneid/pigeon.dart' as pigeon;
 import 'package:dart_opendroneid/src/types.dart';
 import 'package:flutter_opendroneid/utils/compare_extension.dart';
 
+/// The [MessageContainer] groups together messages of different types
+/// from one device. It contains one instance of each message. The container is
+/// then sent using stream to client of the library.
 class MessageContainer {
   final String macAddress;
   final DateTime lastUpdate;
@@ -143,39 +146,36 @@ class MessageContainer {
     };
   }
 
-  pigeon.MessageSource getPackSource() => source;
+  pigeon.MessageSource get packSource => source;
 
-  bool operatorIDSet() {
-    return operatorIdMessage != null &&
-        operatorIdMessage!.operatorID != OPERATOR_ID_NOT_SET;
-  }
+  bool get operatorIDSet =>
+      operatorIdMessage != null &&
+      operatorIdMessage!.operatorID != OPERATOR_ID_NOT_SET;
 
-  bool operatorIDValid() {
+  bool get operatorIDValid {
     final validCharacters = RegExp(r'^[a-zA-Z0-9]+$');
     return operatorIdMessage != null &&
         operatorIdMessage!.operatorID.length == 16 &&
         validCharacters.hasMatch(operatorIdMessage!.operatorID);
   }
 
-  bool systemDataValid() {
-    return systemDataMessage != null &&
-        systemDataMessage?.operatorLocation != null &&
-        systemDataMessage!.operatorLocation!.latitude != INV_LAT &&
-        systemDataMessage?.operatorLocation!.longitude != INV_LON &&
-        systemDataMessage!.operatorLocation!.latitude <= MAX_LAT &&
-        systemDataMessage!.operatorLocation!.latitude >= MIN_LAT &&
-        systemDataMessage!.operatorLocation!.longitude <= MAX_LON &&
-        systemDataMessage!.operatorLocation!.longitude >= MIN_LON;
-  }
+  bool get systemDataValid =>
+      systemDataMessage != null &&
+      systemDataMessage?.operatorLocation != null &&
+      systemDataMessage!.operatorLocation!.latitude != INV_LAT &&
+      systemDataMessage?.operatorLocation!.longitude != INV_LON &&
+      systemDataMessage!.operatorLocation!.latitude <= MAX_LAT &&
+      systemDataMessage!.operatorLocation!.latitude >= MIN_LAT &&
+      systemDataMessage!.operatorLocation!.longitude <= MAX_LON &&
+      systemDataMessage!.operatorLocation!.longitude >= MIN_LON;
 
-  bool locationValid() {
-    return locationMessage != null &&
-        locationMessage?.location != null &&
-        locationMessage!.location!.latitude != INV_LAT &&
-        locationMessage!.location!.longitude != INV_LON &&
-        locationMessage!.location!.latitude <= MAX_LAT &&
-        locationMessage!.location!.longitude <= MAX_LON &&
-        locationMessage!.location!.latitude >= MIN_LAT &&
-        locationMessage!.location!.longitude >= MIN_LON;
-  }
+  bool get locationValid =>
+      locationMessage != null &&
+      locationMessage?.location != null &&
+      locationMessage!.location!.latitude != INV_LAT &&
+      locationMessage!.location!.longitude != INV_LON &&
+      locationMessage!.location!.latitude <= MAX_LAT &&
+      locationMessage!.location!.longitude <= MAX_LON &&
+      locationMessage!.location!.latitude >= MIN_LAT &&
+      locationMessage!.location!.longitude >= MIN_LON;
 }
diff --git a/lib/pigeon.dart b/lib/pigeon.dart
index fb640c3..05bb9b7 100644
--- a/lib/pigeon.dart
+++ b/lib/pigeon.dart
@@ -426,9 +426,9 @@ class PayloadApi {
 
   static const MessageCodec<Object?> codec = _PayloadApiCodec();
 
-  Future<ODIDPayload> getPayload(Uint8List arg_rawData, MessageSource arg_source, String arg_macAddress, int arg_rssi, int arg_receivedTimestamp) async {
+  Future<ODIDPayload> buildPayload(Uint8List arg_rawData, MessageSource arg_source, String arg_macAddress, int arg_rssi, int arg_receivedTimestamp) async {
     final BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
-        'dev.flutter.pigeon.flutter_opendroneid.PayloadApi.getPayload', codec,
+        'dev.flutter.pigeon.flutter_opendroneid.PayloadApi.buildPayload', codec,
         binaryMessenger: _binaryMessenger);
     final List<Object?>? replyList =
         await channel.send(<Object?>[arg_rawData, arg_source.index, arg_macAddress, arg_rssi, arg_receivedTimestamp]) as List<Object?>?;
diff --git a/pigeon/schema.dart b/pigeon/schema.dart
index bb37b13..007a4d9 100644
--- a/pigeon/schema.dart
+++ b/pigeon/schema.dart
@@ -85,6 +85,6 @@ abstract class Api {
 // ODIDPayload is not generated until used in API
 @HostApi()
 abstract class PayloadApi {
-  ODIDPayload getPayload(Uint8List rawData, MessageSource source,
+  ODIDPayload buildPayload(Uint8List rawData, MessageSource source,
       String macAddress, int rssi, int receivedTimestamp);
 }