diff --git a/services/inputflinger/include/InputReaderBase.h b/services/inputflinger/include/InputReaderBase.h
index 3bf212a..19abfd9 100644
--- a/services/inputflinger/include/InputReaderBase.h
+++ b/services/inputflinger/include/InputReaderBase.h
@@ -198,6 +198,10 @@
     // Used to determine which DisplayViewport should be tied to which InputDevice.
     std::unordered_map<std::string, uint8_t> portAssociations;
 
+    // The associations between input device names and display unique ids.
+    // Used to determine which DisplayViewport should be tied to which InputDevice.
+    std::unordered_map<std::string, std::string> uniqueIdAssociations;
+
     // The suggested display ID to show the cursor.
     int32_t defaultPointerDisplayId;
 
diff --git a/services/inputflinger/reader/InputDevice.cpp b/services/inputflinger/reader/InputDevice.cpp
index 8f75d22..ad503fd 100644
--- a/services/inputflinger/reader/InputDevice.cpp
+++ b/services/inputflinger/reader/InputDevice.cpp
@@ -103,6 +103,12 @@
     } else {
         dump += "<none>\n";
     }
+    dump += StringPrintf(INDENT2 "AssociatedDisplayUniqueId: ");
+    if (mAssociatedDisplayUniqueId) {
+        dump += StringPrintf("%s\n", mAssociatedDisplayUniqueId->c_str());
+    } else {
+        dump += "<none>\n";
+    }
     dump += StringPrintf(INDENT2 "HasMic:     %s\n", toString(mHasMic));
     dump += StringPrintf(INDENT2 "Sources: 0x%08x\n", deviceInfo.getSources());
     dump += StringPrintf(INDENT2 "KeyboardType: %d\n", deviceInfo.getKeyboardType());
@@ -293,8 +299,9 @@
         }
 
         if (!changes || (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO)) {
-            // In most situations, no port will be specified.
+            // In most situations, no port or name will be specified.
             mAssociatedDisplayPort = std::nullopt;
+            mAssociatedDisplayUniqueId = std::nullopt;
             mAssociatedViewport = std::nullopt;
             // Find the display port that corresponds to the current input port.
             const std::string& inputPort = mIdentifier.location;
@@ -305,6 +312,13 @@
                     mAssociatedDisplayPort = std::make_optional(displayPort->second);
                 }
             }
+            const std::string& inputDeviceName = mIdentifier.name;
+            const std::unordered_map<std::string, std::string>& names =
+                    config->uniqueIdAssociations;
+            const auto& displayUniqueId = names.find(inputDeviceName);
+            if (displayUniqueId != names.end()) {
+                mAssociatedDisplayUniqueId = displayUniqueId->second;
+            }
 
             // If the device was explicitly disabled by the user, it would be present in the
             // "disabledDevices" list. If it is associated with a specific display, and it was not
@@ -319,6 +333,15 @@
                           getName().c_str(), *mAssociatedDisplayPort);
                     enabled = false;
                 }
+            } else if (mAssociatedDisplayUniqueId != std::nullopt) {
+                mAssociatedViewport =
+                        config->getDisplayViewportByUniqueId(*mAssociatedDisplayUniqueId);
+                if (!mAssociatedViewport) {
+                    ALOGW("Input device %s should be associated with display %s but the "
+                          "corresponding viewport cannot be found",
+                          inputDeviceName.c_str(), mAssociatedDisplayUniqueId->c_str());
+                    enabled = false;
+                }
             }
 
             if (changes) {
diff --git a/services/inputflinger/reader/include/InputDevice.h b/services/inputflinger/reader/include/InputDevice.h
index b2b23e5..291f105 100644
--- a/services/inputflinger/reader/include/InputDevice.h
+++ b/services/inputflinger/reader/include/InputDevice.h
@@ -169,6 +169,7 @@
     uint32_t mSources;
     bool mIsExternal;
     std::optional<uint8_t> mAssociatedDisplayPort;
+    std::optional<std::string> mAssociatedDisplayUniqueId;
     std::optional<DisplayViewport> mAssociatedViewport;
     bool mHasMic;
     bool mDropUntilNextSync;
diff --git a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
index 2c5a576..104d087 100644
--- a/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/KeyboardInputMapper.cpp
@@ -132,9 +132,7 @@
 
 std::optional<DisplayViewport> KeyboardInputMapper::findViewport(
         nsecs_t when, const InputReaderConfiguration* config) {
-    const std::optional<uint8_t> displayPort = getDeviceContext().getAssociatedDisplayPort();
-    if (displayPort) {
-        // Find the viewport that contains the same port
+    if (getDeviceContext().getAssociatedViewport()) {
         return getDeviceContext().getAssociatedViewport();
     }
 
diff --git a/services/inputflinger/tests/InputReader_test.cpp b/services/inputflinger/tests/InputReader_test.cpp
index 0e721e9..5eaca71 100644
--- a/services/inputflinger/tests/InputReader_test.cpp
+++ b/services/inputflinger/tests/InputReader_test.cpp
@@ -269,6 +269,11 @@
         mConfig.portAssociations.insert({inputPort, displayPort});
     }
 
+    void addInputUniqueIdAssociation(const std::string& inputUniqueId,
+                                     const std::string& displayUniqueId) {
+        mConfig.uniqueIdAssociations.insert({inputUniqueId, displayUniqueId});
+    }
+
     void addDisabledDevice(int32_t deviceId) { mConfig.disabledDevices.insert(deviceId); }
 
     void removeDisabledDevice(int32_t deviceId) { mConfig.disabledDevices.erase(deviceId); }
@@ -2621,6 +2626,41 @@
     ASSERT_FALSE(mDevice->isEnabled());
 }
 
+TEST_F(InputDeviceTest, Configure_AssignsDisplayUniqueId) {
+    // Device should be enabled by default.
+    mFakePolicy->clearViewports();
+    mDevice->addMapper<FakeInputMapper>(EVENTHUB_ID, AINPUT_SOURCE_KEYBOARD);
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(), 0);
+    ASSERT_TRUE(mDevice->isEnabled());
+
+    // Device should be disabled because it is associated with a specific display, but the
+    // corresponding display is not found.
+    const std::string DISPLAY_UNIQUE_ID = "displayUniqueId";
+    mFakePolicy->addInputUniqueIdAssociation(DEVICE_NAME, DISPLAY_UNIQUE_ID);
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                       InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    ASSERT_FALSE(mDevice->isEnabled());
+
+    // Device should be enabled when a display is found.
+    mFakePolicy->addDisplayViewport(SECONDARY_DISPLAY_ID, DISPLAY_WIDTH, DISPLAY_HEIGHT,
+                                    DISPLAY_ORIENTATION_0, /* isActive= */ true, DISPLAY_UNIQUE_ID,
+                                    NO_PORT, ViewportType::INTERNAL);
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                       InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    ASSERT_TRUE(mDevice->isEnabled());
+
+    // Device should be disabled after set disable.
+    mFakePolicy->addDisabledDevice(mDevice->getId());
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                       InputReaderConfiguration::CHANGE_ENABLED_STATE);
+    ASSERT_FALSE(mDevice->isEnabled());
+
+    // Device should still be disabled even found the associated display.
+    mDevice->configure(ARBITRARY_TIME, mFakePolicy->getReaderConfiguration(),
+                       InputReaderConfiguration::CHANGE_DISPLAY_INFO);
+    ASSERT_FALSE(mDevice->isEnabled());
+}
+
 // --- InputMapperTest ---
 
 class InputMapperTest : public testing::Test {
@@ -7853,8 +7893,6 @@
     ASSERT_EQ(SECONDARY_DISPLAY_ID, args.displayId);
 }
 
-
-
 TEST_F(MultiTouchInputMapperTest, Process_ShouldHandleSingleTouch) {
     addConfigurationProperty("touch.deviceType", "touchScreen");
     prepareDisplay(DISPLAY_ORIENTATION_0);