diff --git a/common.mk b/common.mk
index 5d81db9..9bbf887 100644
--- a/common.mk
+++ b/common.mk
@@ -146,6 +146,10 @@ PRODUCT_PACKAGES += \
     android.hardware.drm@1.3-service.clearkey \
     libdrmclearkeyplugin
 
+# Fingerprint
+PRODUCT_PACKAGES += \
+    vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125
+
 # fastbootd
 PRODUCT_PACKAGES += \
     fastbootd
@@ -276,7 +280,8 @@ PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.software.verified_boot.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.software.verified_boot.xml \
     frameworks/native/data/etc/android.software.vulkan.deqp.level-2020-03-01.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.software.vulkan.deqp.level.xml \
     frameworks/native/data/etc/com.nxp.mifare.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/com.nxp.mifare.xml \
-    frameworks/native/data/etc/handheld_core_hardware.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/handheld_core_hardware.xml
+    frameworks/native/data/etc/handheld_core_hardware.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/handheld_core_hardware.xml \
+    vendor/lineage/config/permissions/vendor.lineage.biometrics.fingerprint.inscreen.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/vendor.lineage.biometrics.fingerprint.inscreen.xml
 
 # Power
 PRODUCT_PACKAGES += \
diff --git a/configs/framework_compatibility_matrix.xml b/configs/framework_compatibility_matrix.xml
index 16e5057..aa2986d 100644
--- a/configs/framework_compatibility_matrix.xml
+++ b/configs/framework_compatibility_matrix.xml
@@ -74,6 +74,14 @@
             <instance>gnss_vendor</instance>
         </interface>
     </hal>
+    <hal format="hidl" optional="true">
+        <name>vendor.lineage.biometrics.fingerprint.inscreen</name>
+        <version>1.0</version>
+        <interface>
+            <name>IFingerprintInscreen</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.keymaster</name>
         <version>4.0</version>
diff --git a/fod/Android.mk b/fod/Android.mk
new file mode 100644
index 0000000..107d202
--- /dev/null
+++ b/fod/Android.mk
@@ -0,0 +1,45 @@
+#
+# Copyright (C) 2020 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    FingerprintInscreen.cpp \
+    service.cpp
+
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
+
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libhardware \
+    libhidlbase \
+    liblog \
+    libhwbinder \
+    libutils \
+    vendor.lineage.biometrics.fingerprint.inscreen@1.0 \
+    vendor.samsung.hardware.biometrics.fingerprint@3.0
+
+LOCAL_MODULE := vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125
+LOCAL_INIT_RC := vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.rc
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_OWNER := samsung
+LOCAL_VINTF_FRAGMENTS := vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.xml
+LOCAL_VENDOR_MODULE := true
+
+include $(BUILD_EXECUTABLE)
diff --git a/fod/FingerprintInscreen.cpp b/fod/FingerprintInscreen.cpp
new file mode 100644
index 0000000..c05933c
--- /dev/null
+++ b/fod/FingerprintInscreen.cpp
@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) 2019 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "FingerprintInscreenService"
+
+#include "FingerprintInscreen.h"
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+#include <fstream>
+
+#define FINGERPRINT_ACQUIRED_VENDOR 6
+
+#define BRIGHTNESS_PATH "/sys/class/backlight/panel0-backlight/brightness"
+#define TSP_CMD_PATH "/sys/class/sec/tsp/cmd"
+
+#define SEM_FINGER_STATE 22
+#define SEM_PARAM_PRESSED 2
+#define SEM_PARAM_RELEASED 1
+#define SEM_AOSP_FQNAME "android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint"
+
+namespace vendor {
+namespace lineage {
+namespace biometrics {
+namespace fingerprint {
+namespace inscreen {
+namespace V1_0 {
+namespace implementation {
+
+/*
+ * Write value to path and close file.
+ */
+template <typename T>
+static void set(const std::string& path, const T& value) {
+    std::ofstream file(path);
+    file << value;
+}
+
+template <typename T>
+static T get(const std::string& path, const T& def) {
+    std::ifstream file(path);
+    T result;
+
+    file >> result;
+    return file.fail() ? def : result;
+}
+
+static hidl_vec<int8_t> stringToVec(const std::string& str) {
+    auto vec = hidl_vec<int8_t>();
+    vec.resize(str.size() + 1);
+    for (size_t i = 0; i < str.size(); ++i) {
+        vec[i] = (int8_t) str[i];
+    }
+    vec[str.size()] = '\0';
+    return vec;
+}
+
+FingerprintInscreen::FingerprintInscreen() {
+    mSehBiometricsFingerprintService = ISehBiometricsFingerprint::getService();
+}
+
+void FingerprintInscreen::requestResult(int, const hidl_vec<int8_t>&) {
+    // Ignore all results
+}
+
+Return<void> FingerprintInscreen::onStartEnroll() {
+    return Void();
+}
+
+Return<void> FingerprintInscreen::onFinishEnroll() {
+    return Void();
+}
+
+Return<void> FingerprintInscreen::onPress() {
+    mPreviousBrightness = get<std::string>(BRIGHTNESS_PATH, "");
+    set(BRIGHTNESS_PATH, "425");
+    set(TSP_CMD_PATH, "fod_enable,1,1,0");
+    mSehBiometricsFingerprintService->sehRequest(SEM_FINGER_STATE, 
+        SEM_PARAM_PRESSED, stringToVec(SEM_AOSP_FQNAME), FingerprintInscreen::requestResult);
+    return Void();
+}
+
+Return<void> FingerprintInscreen::onRelease() {
+    mSehBiometricsFingerprintService->sehRequest(SEM_FINGER_STATE, 
+        SEM_PARAM_RELEASED, stringToVec(SEM_AOSP_FQNAME), FingerprintInscreen::requestResult);
+    set(TSP_CMD_PATH, "fod_enable,0");
+    if (!mPreviousBrightness.empty()) {
+        set(BRIGHTNESS_PATH, mPreviousBrightness);
+        mPreviousBrightness = "";
+    }
+    return Void();
+}
+
+Return<void> FingerprintInscreen::onShowFODView() {
+    return Void();
+}
+
+Return<void> FingerprintInscreen::onHideFODView() {
+    set(TSP_CMD_PATH, "fod_enable,0");
+    if (!mPreviousBrightness.empty()) {
+        set(BRIGHTNESS_PATH, mPreviousBrightness);
+        mPreviousBrightness = "";
+    }
+    return Void();
+}
+
+Return<bool> FingerprintInscreen::handleAcquired(int32_t acquiredInfo, int32_t vendorCode) {
+    std::lock_guard<std::mutex> _lock(mCallbackLock);
+    if (mCallback == nullptr) {
+        return false;
+    }
+
+    if (acquiredInfo == FINGERPRINT_ACQUIRED_VENDOR) {
+        if (vendorCode == 10002) {
+            Return<void> ret = mCallback->onFingerDown();
+            if (!ret.isOk()) {
+                LOG(ERROR) << "FingerDown() error: " << ret.description();
+            }
+            return true;
+        } else if (vendorCode == 10001) {
+            Return<void> ret = mCallback->onFingerUp();
+            if (!ret.isOk()) {
+                LOG(ERROR) << "FingerUp() error: " << ret.description();
+            }
+            return true;
+        }
+    }
+    LOG(ERROR) << "acquiredInfo: " << acquiredInfo << ", vendorCode: " << vendorCode << "\n";
+    return false;
+}
+
+Return<bool> FingerprintInscreen::handleError(int32_t, int32_t) {
+    return false;
+}
+
+Return<void> FingerprintInscreen::setLongPressEnabled(bool) {
+    return Void();
+}
+
+Return<int32_t> FingerprintInscreen::getDimAmount(int32_t cur_brightness) {
+    if (cur_brightness <= 12) {
+        return 2200 / std::max(cur_brightness, 10);
+    } else if (cur_brightness <= 16) {
+        return 3000 / cur_brightness;
+    } else if (cur_brightness <= 20) {
+        return 3700 / cur_brightness;
+    } else {
+        return 4400 / cur_brightness;
+    }
+}
+
+Return<bool> FingerprintInscreen::shouldBoostBrightness() {
+    return false;
+}
+
+Return<void> FingerprintInscreen::setCallback(const sp<IFingerprintInscreenCallback>& callback) {
+    {
+        std::lock_guard<std::mutex> _lock(mCallbackLock);
+        mCallback = callback;
+    }
+    return Void();
+}
+
+Return<int32_t> FingerprintInscreen::getPositionX() {
+    return 440;
+}
+
+Return<int32_t> FingerprintInscreen::getPositionY() {
+    return 2020;
+}
+
+Return<int32_t> FingerprintInscreen::getSize() {
+    return 200;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace inscreen
+}  // namespace fingerprint
+}  // namespace biometrics
+}  // namespace lineage
+}  // namespace vendor
diff --git a/fod/FingerprintInscreen.h b/fod/FingerprintInscreen.h
new file mode 100644
index 0000000..8e557a4
--- /dev/null
+++ b/fod/FingerprintInscreen.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef VENDOR_LINEAGE_BIOMETRICS_FINGERPRINT_INSCREEN_V1_0_FINGERPRINTINSCREEN_H
+#define VENDOR_LINEAGE_BIOMETRICS_FINGERPRINT_INSCREEN_V1_0_FINGERPRINTINSCREEN_H
+
+#include <vendor/lineage/biometrics/fingerprint/inscreen/1.0/IFingerprintInscreen.h>
+#include <vendor/samsung/hardware/biometrics/fingerprint/3.0/ISehBiometricsFingerprint.h>
+
+namespace vendor {
+namespace lineage {
+namespace biometrics {
+namespace fingerprint {
+namespace inscreen {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::vendor::samsung::hardware::biometrics::fingerprint::V3_0::ISehBiometricsFingerprint;
+
+class FingerprintInscreen : public IFingerprintInscreen {
+  public:
+    FingerprintInscreen();
+
+    Return<void> onStartEnroll() override;
+    Return<void> onFinishEnroll() override;
+    Return<void> onPress() override;
+    Return<void> onRelease() override;
+    Return<void> onShowFODView() override;
+    Return<void> onHideFODView() override;
+    Return<bool> handleAcquired(int32_t acquiredInfo, int32_t vendorCode) override;
+    Return<bool> handleError(int32_t error, int32_t vendorCode) override;
+    Return<void> setLongPressEnabled(bool enabled) override;
+    Return<int32_t> getDimAmount(int32_t cur_brightness) override;
+    Return<bool> shouldBoostBrightness() override;
+    Return<void> setCallback(const sp<IFingerprintInscreenCallback>& callback) override;
+    Return<int32_t> getPositionX() override;
+    Return<int32_t> getPositionY() override;
+    Return<int32_t> getSize() override;
+
+  private:
+    sp<ISehBiometricsFingerprint> mSehBiometricsFingerprintService;
+    std::mutex mCallbackLock;
+    sp<IFingerprintInscreenCallback> mCallback;
+    std::string mPreviousBrightness;
+
+    static void requestResult(int retval, const hidl_vec<int8_t>& outBuf);
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace inscreen
+}  // namespace fingerprint
+}  // namespace biometrics
+}  // namespace lineage
+}  // namespace vendor
+
+#endif  // VENDOR_LINEAGE_BIOMETRICS_FINGERPRINT_INSCREEN_V1_0_FINGERPRINTINSCREEN_H
diff --git a/fod/service.cpp b/fod/service.cpp
new file mode 100644
index 0000000..7983144
--- /dev/null
+++ b/fod/service.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2020 The LineageOS Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "FingerprintInscreen.h"
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+using vendor::lineage::biometrics::fingerprint::inscreen::V1_0::IFingerprintInscreen;
+using vendor::lineage::biometrics::fingerprint::inscreen::V1_0::implementation::FingerprintInscreen;
+
+using android::OK;
+using android::status_t;
+
+int main() {
+    android::sp<IFingerprintInscreen> service = new FingerprintInscreen();
+
+    configureRpcThreadpool(1, true);
+
+    status_t status = service->registerAsService();
+    if (status != OK) {
+        LOG(ERROR) << "Cannot register FOD HAL service.";
+        return 1;
+    }
+
+    LOG(INFO) << "FOD HAL service ready.";
+
+    joinRpcThreadpool();
+
+    LOG(ERROR) << "FOD HAL service failed to join thread pool.";
+    return 1;
+}
diff --git a/fod/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.rc b/fod/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.rc
new file mode 100644
index 0000000..490119a
--- /dev/null
+++ b/fod/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.rc
@@ -0,0 +1,9 @@
+service vendor.fingerprint-inscreen-1-0 /vendor/bin/hw/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125
+    interface vendor.lineage.biometrics.fingerprint.inscreen@1.0::IFingerprintInscreen default
+    class hal
+    user system
+    group system
+    shutdown critical
+
+on boot
+    chown system system /sys/class/sec/tsp/cmd
diff --git a/fod/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.xml b/fod/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.xml
new file mode 100644
index 0000000..e03c70c
--- /dev/null
+++ b/fod/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>vendor.lineage.biometrics.fingerprint.inscreen</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IFingerprintInscreen</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/interfaces/Android.bp b/interfaces/Android.bp
new file mode 100644
index 0000000..337a0c4
--- /dev/null
+++ b/interfaces/Android.bp
@@ -0,0 +1,4 @@
+hidl_package_root {
+    name: "vendor.samsung.hardware",
+    path: "device/samsung/sm7125-common/interfaces",
+}
diff --git a/interfaces/biometrics/fingerprint/3.0/Android.bp b/interfaces/biometrics/fingerprint/3.0/Android.bp
new file mode 100644
index 0000000..059fbfe
--- /dev/null
+++ b/interfaces/biometrics/fingerprint/3.0/Android.bp
@@ -0,0 +1,14 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "vendor.samsung.hardware.biometrics.fingerprint@3.0",
+    root: "vendor.samsung.hardware",
+    srcs: [
+        "ISehBiometricsFingerprint.hal",
+    ],
+    interfaces: [
+        "android.hardware.biometrics.fingerprint@2.1",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/interfaces/biometrics/fingerprint/3.0/ISehBiometricsFingerprint.hal b/interfaces/biometrics/fingerprint/3.0/ISehBiometricsFingerprint.hal
new file mode 100644
index 0000000..0b65edd
--- /dev/null
+++ b/interfaces/biometrics/fingerprint/3.0/ISehBiometricsFingerprint.hal
@@ -0,0 +1,7 @@
+package vendor.samsung.hardware.biometrics.fingerprint@3.0;
+
+import android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint;
+
+interface ISehBiometricsFingerprint extends android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint {
+    sehRequest(int32_t cmdId, int32_t inParam, vec<int8_t> inBuf) generates (int32_t retval, vec<int8_t> outBuf);
+};
diff --git a/proprietary-files.txt b/proprietary-files.txt
index a3deaad..95511fa 100644
--- a/proprietary-files.txt
+++ b/proprietary-files.txt
@@ -657,6 +657,10 @@ vendor/lib64/libsecnativefeature.so
 vendor/etc/floating_feature.xml
 
 # Fingerprint
+vendor/bin/hw/vendor.samsung.hardware.biometrics.fingerprint@3.0-service
+vendor/etc/init/vendor.samsung.hardware.biometrics.fingerprint@3.0-service.rc
+vendor/lib/hw/fingerprint.default.so
+vendor/lib64/hw/fingerprint.default.so
 vendor/lib/libbauthserver.so
 vendor/lib64/libbauthserver.so
 vendor/lib/libbauthtzcommon.so
diff --git a/rootdir/etc/init.target.rc b/rootdir/etc/init.target.rc
index b49653d..30708fa 100644
--- a/rootdir/etc/init.target.rc
+++ b/rootdir/etc/init.target.rc
@@ -131,6 +131,8 @@ on post-fs-data
 # For cpusets initialize for Silver Only first and then Silver + Gold
 # Silver Only configuration cannot work with 0-7
 on boot
+    chown system system /sys/class/lcd/panel/mask_brightness
+
     write /dev/cpuset/audio-app/cpus 1-2
     chown system system /sys/kernel/hbtp/display_pwr
     start rmt_storage
diff --git a/sepolicy/vendor/file_contexts b/sepolicy/vendor/file_contexts
index 755418d..acf92a1 100644
--- a/sepolicy/vendor/file_contexts
+++ b/sepolicy/vendor/file_contexts
@@ -18,3 +18,5 @@
 /(vendor|system/vendor)/bin/hw/vendor\.lineage\.fastcharge@1\.0-service\.samsung				u:object_r:hal_lineage_fastcharge_default_exec:s0
 /(vendor|system/vendor)/bin/hw/vendor\.lineage\.touch@1\.0-service\.samsung					u:object_r:hal_lineage_touch_default_exec:s0
 /(vendor|system/vendor)/bin/hw/vendor\.lineage\.livedisplay@2\.0-service.samsung-qcom\.sm7125		u:object_r:hal_lineage_livedisplay_sysfs_exec:s0
+/(vendor|system/vendor)/bin/hw/vendor.samsung.hardware.biometrics.fingerprint@3.0-service			u:object_r:hal_fingerprint_default_exec:s0
+/(vendor|system/vendor)/bin/hw/vendor.lineage.biometrics.fingerprint.inscreen@1.0-service.samsung.sm7125	u:object_r:hal_lineage_fod_default_exec:s0