diff --git a/include/input/Input.h b/include/input/Input.h
index b86d761..9e47318 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -397,6 +397,8 @@
 
     virtual int32_t getType() const = 0;
 
+    inline int32_t getId() const { return mId; }
+
     inline int32_t getDeviceId() const { return mDeviceId; }
 
     inline uint32_t getSource() const { return mSource; }
@@ -409,11 +411,15 @@
 
     inline std::array<uint8_t, 32> getHmac() const { return mHmac; }
 
+    static int32_t nextId();
+
 protected:
-    void initialize(int32_t deviceId, uint32_t source, int32_t displayId,
+    void initialize(int32_t id, int32_t deviceId, uint32_t source, int32_t displayId,
                     std::array<uint8_t, 32> hmac);
+
     void initialize(const InputEvent& from);
 
+    int32_t mId;
     int32_t mDeviceId;
     uint32_t mSource;
     int32_t mDisplayId;
@@ -450,7 +456,7 @@
     static const char* getLabel(int32_t keyCode);
     static int32_t getKeyCodeFromLabel(const char* label);
 
-    void initialize(int32_t deviceId, uint32_t source, int32_t displayId,
+    void initialize(int32_t id, int32_t deviceId, uint32_t source, int32_t displayId,
                     std::array<uint8_t, 32> hmac, int32_t action, int32_t flags, int32_t keyCode,
                     int32_t scanCode, int32_t metaState, int32_t repeatCount, nsecs_t downTime,
                     nsecs_t eventTime);
@@ -674,7 +680,7 @@
 
     ssize_t findPointerIndex(int32_t pointerId) const;
 
-    void initialize(int32_t deviceId, uint32_t source, int32_t displayId,
+    void initialize(int32_t id, int32_t deviceId, uint32_t source, int32_t displayId,
                     std::array<uint8_t, 32> hmac, int32_t action, int32_t actionButton,
                     int32_t flags, int32_t edgeFlags, int32_t metaState, int32_t buttonState,
                     MotionClassification classification, float xScale, float yScale, float xOffset,
@@ -754,7 +760,7 @@
 
     inline bool getInTouchMode() const { return mInTouchMode; }
 
-    void initialize(bool hasFocus, bool inTouchMode);
+    void initialize(int32_t id, bool hasFocus, bool inTouchMode);
 
     void initialize(const FocusEvent& from);