diff --git a/Example Apps/SPPermissions.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate b/Example Apps/SPPermissions.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate
index e08abaf0..de437d24 100644
Binary files a/Example Apps/SPPermissions.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate and b/Example Apps/SPPermissions.xcodeproj/project.xcworkspace/xcuserdata/ivanvorobei.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/README.md b/README.md
index f325cda0..930d4ef6 100644
--- a/README.md
+++ b/README.md
@@ -196,6 +196,12 @@ let authorized = SPPermissions.Permission.calendar.authorized
 
 Also available `denied` & `notDetermined`.
 
+You can get plist keys for permission:
+
+```swift
+let key = SPPermissions.Permission.bluetooth.usageDescriptionKey
+```
+
 ## Request
 
 Now available 3 present styles: `Dialog`, `List` and `Native`. Each interface has delegates and a data source. If you want see an example app, open `Example Apps/SPPermissions.xcodeproj`.
diff --git a/SPPermissions.podspec b/SPPermissions.podspec
index ef139766..0f095661 100644
--- a/SPPermissions.podspec
+++ b/SPPermissions.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
 
   s.name          = "SPPermissions"
-  s.version       = "6.4.0"
+  s.version       = "6.4.1"
   s.summary       = "Ask permissions on Swift. Available List, Dialog & Native interface. Can check state permission."
   s.homepage      = "https://github.com/ivanvorobei/SPPermissions"
   s.source        = { :git => "https://github.com/ivanvorobei/SPPermissions.git", :tag => s.version }
diff --git a/Sources/SPPermissions/SPPermissions.swift b/Sources/SPPermissions/SPPermissions.swift
index abf6b3a1..11304bd9 100644
--- a/Sources/SPPermissions/SPPermissions.swift
+++ b/Sources/SPPermissions/SPPermissions.swift
@@ -111,13 +111,6 @@ public enum SPPermissions {
         
         // MARK: Must Ovveride
         
-        /**
-         SPPermissions: Permission type.
-         */
-        open var usageDescriptionKey: String? {
-            preconditionFailure("This method must be overridden.")
-        }
-        
         /**
          SPPermissions: Permission type.
          */
diff --git a/Sources/SPPermissionsBluetooth/SPBluetoothPermission.swift b/Sources/SPPermissionsBluetooth/SPBluetoothPermission.swift
index e6eb4095..fbc06563 100644
--- a/Sources/SPPermissionsBluetooth/SPBluetoothPermission.swift
+++ b/Sources/SPPermissionsBluetooth/SPBluetoothPermission.swift
@@ -30,7 +30,7 @@ import CoreBluetooth
 
 public extension SPPermissions.Permission {
 
-    static var bluetooth: SPPermissions.Permission {
+    static var bluetooth: SPBluetoothPermission {
         return SPBluetoothPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPBluetoothPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .bluetooth }
-    open override var usageDescriptionKey: String? { "NSBluetoothAlwaysUsageDescription" }
+    open var usageDescriptionKey: String? { "NSBluetoothAlwaysUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         if #available(iOS 13.0, tvOS 13, *) {
diff --git a/Sources/SPPermissionsCalendar/SPCalendarPermission.swift b/Sources/SPPermissionsCalendar/SPCalendarPermission.swift
index b7451655..fd96fc90 100644
--- a/Sources/SPPermissionsCalendar/SPCalendarPermission.swift
+++ b/Sources/SPPermissionsCalendar/SPCalendarPermission.swift
@@ -30,7 +30,7 @@ import EventKit
 
 public extension SPPermissions.Permission {
 
-    static var calendar: SPPermissions.Permission {
+    static var calendar: SPCalendarPermission {
         return SPCalendarPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPCalendarPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .calendar }
-    open override var usageDescriptionKey: String? { "NSCalendarsUsageDescription" }
+    open var usageDescriptionKey: String? { "NSCalendarsUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch EKEventStore.authorizationStatus(for: EKEntityType.event) {
diff --git a/Sources/SPPermissionsCamera/SPCameraPermission.swift b/Sources/SPPermissionsCamera/SPCameraPermission.swift
index 391b51f2..7b06f5c4 100644
--- a/Sources/SPPermissionsCamera/SPCameraPermission.swift
+++ b/Sources/SPPermissionsCamera/SPCameraPermission.swift
@@ -31,7 +31,7 @@ import AVFoundation
 @available(iOS 11.0, macCatalyst 14.0, *)
 public extension SPPermissions.Permission {
     
-    static var camera: SPPermissions.Permission {
+    static var camera: SPCameraPermission {
         return SPCameraPermission()
     }
 }
@@ -40,7 +40,7 @@ public extension SPPermissions.Permission {
 public class SPCameraPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .camera }
-    open override var usageDescriptionKey: String? { "NSCameraUsageDescription" }
+    open var usageDescriptionKey: String? { "NSCameraUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch AVCaptureDevice.authorizationStatus(for: AVMediaType.video) {
diff --git a/Sources/SPPermissionsContacts/SPContactsPermission.swift b/Sources/SPPermissionsContacts/SPContactsPermission.swift
index cc30072b..0e4ff17b 100644
--- a/Sources/SPPermissionsContacts/SPContactsPermission.swift
+++ b/Sources/SPPermissionsContacts/SPContactsPermission.swift
@@ -30,7 +30,7 @@ import Contacts
 
 public extension SPPermissions.Permission {
 
-    static var contacts: SPPermissions.Permission {
+    static var contacts: SPContactsPermission {
         return SPContactsPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPContactsPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .contacts }
-    open override var usageDescriptionKey: String? { "NSContactsUsageDescription" }
+    open var usageDescriptionKey: String? { "NSContactsUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch CNContactStore.authorizationStatus(for: .contacts) {
diff --git a/Sources/SPPermissionsLocationAlways/SPLocationAlwaysPermission.swift b/Sources/SPPermissionsLocationAlways/SPLocationAlwaysPermission.swift
index d337e60b..9a302bf0 100644
--- a/Sources/SPPermissionsLocationAlways/SPLocationAlwaysPermission.swift
+++ b/Sources/SPPermissionsLocationAlways/SPLocationAlwaysPermission.swift
@@ -30,7 +30,7 @@ import MapKit
 
 public extension SPPermissions.Permission {
 
-    static var locationAlways: SPPermissions.Permission {
+    static var locationAlways: SPLocationAlwaysPermission {
         return SPLocationAlwaysPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPLocationAlwaysPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .locationAlways }
-    open override var usageDescriptionKey: String? { "NSLocationAlwaysAndWhenInUseUsageDescription" }
+    open var usageDescriptionKey: String? { "NSLocationAlwaysAndWhenInUseUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         let authorizationStatus: CLAuthorizationStatus = {
diff --git a/Sources/SPPermissionsLocationWhenInUse/SPLocationWhenInUsePermission.swift b/Sources/SPPermissionsLocationWhenInUse/SPLocationWhenInUsePermission.swift
index f47d01d6..66fcf2f6 100644
--- a/Sources/SPPermissionsLocationWhenInUse/SPLocationWhenInUsePermission.swift
+++ b/Sources/SPPermissionsLocationWhenInUse/SPLocationWhenInUsePermission.swift
@@ -30,7 +30,7 @@ import MapKit
 
 public extension SPPermissions.Permission {
     
-    static var locationWhenInUse: SPPermissions.Permission {
+    static var locationWhenInUse: SPLocationWhenInUsePermission {
         return SPLocationWhenInUsePermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPLocationWhenInUsePermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .locationWhenInUse }
-    open override var usageDescriptionKey: String? { "NSLocationWhenInUseUsageDescription" }
+    open var usageDescriptionKey: String? { "NSLocationAlwaysAndWhenInUseUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         let authorizationStatus: CLAuthorizationStatus = {
diff --git a/Sources/SPPermissionsMediaLibrary/SPMediaLibraryPermission.swift b/Sources/SPPermissionsMediaLibrary/SPMediaLibraryPermission.swift
index 1865b5fc..af2b7f21 100644
--- a/Sources/SPPermissionsMediaLibrary/SPMediaLibraryPermission.swift
+++ b/Sources/SPPermissionsMediaLibrary/SPMediaLibraryPermission.swift
@@ -30,7 +30,7 @@ import MediaPlayer
 
 public extension SPPermissions.Permission {
 
-    static var mediaLibrary: SPPermissions.Permission {
+    static var mediaLibrary: SPMediaLibraryPermission {
         return SPMediaLibraryPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPMediaLibraryPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .mediaLibrary }
-    open override var usageDescriptionKey: String? { "NSAppleMusicUsageDescription" }
+    open var usageDescriptionKey: String? { "NSAppleMusicUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch MPMediaLibrary.authorizationStatus() {
diff --git a/Sources/SPPermissionsMicrophone/SPMicrophonePermission.swift b/Sources/SPPermissionsMicrophone/SPMicrophonePermission.swift
index 231bf017..dd5a916f 100644
--- a/Sources/SPPermissionsMicrophone/SPMicrophonePermission.swift
+++ b/Sources/SPPermissionsMicrophone/SPMicrophonePermission.swift
@@ -30,7 +30,7 @@ import AVFoundation
 
 public extension SPPermissions.Permission {
 
-    static var microphone: SPPermissions.Permission {
+    static var microphone: SPMicrophonePermission {
         return SPMicrophonePermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPMicrophonePermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .microphone }
-    open override var usageDescriptionKey: String? { "NSMicrophoneUsageDescription" }
+    open var usageDescriptionKey: String? { "NSMicrophoneUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch  AVAudioSession.sharedInstance().recordPermission {
diff --git a/Sources/SPPermissionsMotion/SPMotionPermission.swift b/Sources/SPPermissionsMotion/SPMotionPermission.swift
index cd665001..0e7bea43 100644
--- a/Sources/SPPermissionsMotion/SPMotionPermission.swift
+++ b/Sources/SPPermissionsMotion/SPMotionPermission.swift
@@ -30,7 +30,7 @@ import CoreMotion
 
 public extension SPPermissions.Permission {
 
-    static var motion: SPPermissions.Permission {
+    static var motion: SPMotionPermission {
         return SPMotionPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPMotionPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .motion }
-    open override var usageDescriptionKey: String? { "NSMotionUsageDescription" }
+    open var usageDescriptionKey: String? { "NSMotionUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch CMMotionActivityManager.authorizationStatus() {
diff --git a/Sources/SPPermissionsNotification/SPNotificationPermission.swift b/Sources/SPPermissionsNotification/SPNotificationPermission.swift
index ff228a96..6d9e674a 100644
--- a/Sources/SPPermissionsNotification/SPNotificationPermission.swift
+++ b/Sources/SPPermissionsNotification/SPNotificationPermission.swift
@@ -29,7 +29,7 @@ import UserNotifications
 
 public extension SPPermissions.Permission {
 
-    static var notification: SPPermissions.Permission {
+    static var notification: SPNotificationPermission {
         return SPNotificationPermission()
     }
 }
@@ -37,7 +37,6 @@ public extension SPPermissions.Permission {
 public class SPNotificationPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .notification }
-    open override var usageDescriptionKey: String? { return nil }
     
     public override var status: SPPermissions.PermissionStatus {
         guard let authorizationStatus = fetchAuthorizationStatus() else { return .notDetermined }
diff --git a/Sources/SPPermissionsPhotoLibrary/SPPhotoLibraryPermission.swift b/Sources/SPPermissionsPhotoLibrary/SPPhotoLibraryPermission.swift
index ec87ec2a..848447ca 100644
--- a/Sources/SPPermissionsPhotoLibrary/SPPhotoLibraryPermission.swift
+++ b/Sources/SPPermissionsPhotoLibrary/SPPhotoLibraryPermission.swift
@@ -29,7 +29,7 @@ import Photos
 
 public extension SPPermissions.Permission {
 
-    static var photoLibrary: SPPermissions.Permission {
+    static var photoLibrary: SPPhotoLibraryPermission {
         return SPPhotoLibraryPermission()
     }
 }
@@ -37,7 +37,14 @@ public extension SPPermissions.Permission {
 public class SPPhotoLibraryPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .photoLibrary }
-    open override var usageDescriptionKey: String? { "NSPhotoLibraryUsageDescription" }
+    
+    open var fullAccessUsageDescriptionKey: String? {
+        "NSPhotoLibraryUsageDescription"
+    }
+    
+    open var addingOnlyUsageDescriptionKey: String? {
+        "NSPhotoLibraryAddUsageDescription"
+    }
     
     public override var status: SPPermissions.PermissionStatus {
         switch PHPhotoLibrary.authorizationStatus() {
diff --git a/Sources/SPPermissionsReminders/SPRemindersPermission.swift b/Sources/SPPermissionsReminders/SPRemindersPermission.swift
index 2f90026e..dbaa7ce5 100644
--- a/Sources/SPPermissionsReminders/SPRemindersPermission.swift
+++ b/Sources/SPPermissionsReminders/SPRemindersPermission.swift
@@ -30,7 +30,7 @@ import EventKit
 
 public extension SPPermissions.Permission {
 
-    static var reminders: SPPermissions.Permission {
+    static var reminders: SPRemindersPermission {
         return SPRemindersPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPRemindersPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .reminders }
-    open override var usageDescriptionKey: String? { "NSRemindersUsageDescription" }
+    open var usageDescriptionKey: String? { "NSRemindersUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch EKEventStore.authorizationStatus(for: EKEntityType.reminder) {
diff --git a/Sources/SPPermissionsSpeechRecognizer/SPSpeechPermission.swift b/Sources/SPPermissionsSpeechRecognizer/SPSpeechPermission.swift
index 66cb82f1..3d6603b4 100644
--- a/Sources/SPPermissionsSpeechRecognizer/SPSpeechPermission.swift
+++ b/Sources/SPPermissionsSpeechRecognizer/SPSpeechPermission.swift
@@ -30,7 +30,7 @@ import Speech
 
 public extension SPPermissions.Permission {
 
-    static var speech: SPPermissions.Permission {
+    static var speech: SPSpeechPermission {
         return SPSpeechPermission()
     }
 }
@@ -38,7 +38,7 @@ public extension SPPermissions.Permission {
 public class SPSpeechPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .speech }
-    open override var usageDescriptionKey: String? { "NSSpeechRecognitionUsageDescription" }
+    open var usageDescriptionKey: String? { "NSSpeechRecognitionUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch SFSpeechRecognizer.authorizationStatus() {
diff --git a/Sources/SPPermissionsTracking/SPTrackingPermission.swift b/Sources/SPPermissionsTracking/SPTrackingPermission.swift
index 49aa3fc4..e5abae20 100644
--- a/Sources/SPPermissionsTracking/SPTrackingPermission.swift
+++ b/Sources/SPPermissionsTracking/SPTrackingPermission.swift
@@ -30,7 +30,7 @@ import AppTrackingTransparency
 @available(iOS 14.5, tvOS 14.5, *)
 public extension SPPermissions.Permission {
 
-    static var tracking: SPPermissions.Permission {
+    static var tracking: SPTrackingPermission {
         return SPTrackingPermission()
     }
 }
@@ -39,7 +39,7 @@ public extension SPPermissions.Permission {
 public class SPTrackingPermission: SPPermissions.Permission {
     
     open override var type: SPPermissions.PermissionType { .tracking }
-    open override var usageDescriptionKey: String? { "NSUserTrackingUsageDescription" }
+    open var usageDescriptionKey: String? { "NSUserTrackingUsageDescription" }
     
     public override var status: SPPermissions.PermissionStatus {
         switch ATTrackingManager.trackingAuthorizationStatus {