diff --git a/src/core/hle/service/ir/ir_user.cpp b/src/core/hle/service/ir/ir_user.cpp
diff --git a/src/core/hle/service/ir/ir_user.h b/src/core/hle/service/ir/ir_user.h
@@ -4,11 +4,33 @@
 
 #pragma once
 
+#include <functional>
 #include "core/hle/service/service.h"
 
 namespace Service {
 namespace IR {
 
+/// An interface representing a device that can communicate with 3DS via ir:USER service
+class IRDevice {
+public:
+    using SendFunc = std::function<void(const std::vector<u8>& data)>;
+    explicit IRDevice(SendFunc send_func);
+    virtual ~IRDevice();
+
+    /// Called when connected with 3DS
+    virtual void Connect() = 0;
+
+    /// Called when disconnected from 3DS
+    virtual void Disconnect() = 0;
+
+    /// Called by ir:USER send function and receive data from 3DS
+    virtual void Receive(const std::vector<u8>& data) = 0;
+
+protected:
+    /// This functon is connected with ir:USER receive function and can be used to send data to 3DS
+    const SendFunc send_func;
+};
+
 class IR_User_Interface : public Service::Interface {
 public:
     IR_User_Interface();
@@ -21,5 +43,8 @@ class IR_User_Interface : public Service::Interface {
 void InitUser();
 void ShutdownUser();
 
+/// Reload input devices. Used when input configuration changed
+void ReloadInputDevices();
+
 } // namespace IR
 } // namespace Service
diff --git a/src/core/settings.cpp b/src/core/settings.cpp
@@ -5,6 +5,7 @@
 #include "audio_core/audio_core.h"
 #include "core/gdbstub/gdbstub.h"
 #include "core/hle/service/hid/hid.h"
+#include "core/hle/service/ir/ir_user.h"
 #include "settings.h"
 #include "video_core/video_core.h"
 
@@ -32,6 +33,7 @@ void Apply() {
     AudioCore::EnableStretching(values.enable_audio_stretching);
 
     Service::HID::ReloadInputDevices();
+    Service::IR::ReloadInputDevices();
 }
 
 } // namespace