diff --git a/docs/global/dconfigfile.zh_CN.dox b/docs/global/dconfigfile.zh_CN.dox
index 8bedc0b..87ae4c7 100644
--- a/docs/global/dconfigfile.zh_CN.dox
+++ b/docs/global/dconfigfile.zh_CN.dox
@@ -108,6 +108,16 @@ dtk_add_config_meta_files(
           "name": "map",
           "permissions": "readwrite",
           "visibility": "public"
+        },
+        "publicConfig": {
+          "value": true,
+          "serial": 0,
+          "flags": ["user-public"],
+          "name": "public configure",
+          "name[zh_CN]": "我是公开的配置",
+          "description": "I am public configure",
+          "permissions": "readwrite",
+          "visibility": "private"
         }
     }
 }
@@ -188,6 +198,8 @@ sudo ./dconfigfile-example
 @brief 存在此标记时，将表明则此配置项不可被覆盖（详见下述 override 机制）。反之，不存在此标记时表明此配置项允许被覆盖，对于此类配置项，如若其有界面设置入口，则当此项不可写时，应当隐藏或禁用界面的设置入口.
 @var Dtk::Core::DConfigFile::Flag Dtk::Core::DConfigFile::Global
 @brief 当读写此类配置时，将忽略用户身份，无论程序使用哪个用户身份执行，读操作都将获取到同样的数据，写操作将对所有用户都生效。但是，如果对应的配置存储目录不存在或无权限写入，则忽略此标志
+@var Dtk::Core::DConfigFile::Flag Dtk::Core::DConfigFile::UserPublic
+@brief 该类配置项允许被其他用户访问
 
 
 @enum Dtk::Core::DConfigFile::Permissions
diff --git a/include/global/dconfigfile.h b/include/global/dconfigfile.h
index 0593f8c..5959fd9 100644
--- a/include/global/dconfigfile.h
+++ b/include/global/dconfigfile.h
@@ -28,7 +28,8 @@ class LIBDTKCORESHARED_EXPORT DConfigFile : public DObject{
 public:
     enum Flag {
         NoOverride = 1 << 0,
-        Global = 1 << 1
+        Global = 1 << 1,
+        UserPublic = 1 << 2
     };
     Q_DECLARE_FLAGS(Flags, Flag)
 
diff --git a/src/dconfigfile.cpp b/src/dconfigfile.cpp
index 1cc8a78..3120662 100644
--- a/src/dconfigfile.cpp
+++ b/src/dconfigfile.cpp
@@ -336,6 +336,8 @@ class Q_DECL_HIDDEN DConfigInfo {
                 flags |= DConfigFile::NoOverride;
             } else if (flag == QLatin1String("global")) {
                 flags |= DConfigFile::Global;
+            } else if (flag == QLatin1String("user-public")) {
+                flags |= DConfigFile::UserPublic;
             }
         }
 
diff --git a/src/dsgapplication.cpp b/src/dsgapplication.cpp
index a22350c..fe75096 100644
--- a/src/dsgapplication.cpp
+++ b/src/dsgapplication.cpp
@@ -1,11 +1,27 @@
-// SPDX-FileCopyrightText: 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2022-2023 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: LGPL-3.0-or-later
 
 #include "dsgapplication.h"
 
+#include <sys/syscall.h>
+#include <unistd.h>
+
 #include <QByteArray>
 #include <QCoreApplication>
+#include <QDebug>
+#include <QDBusUnixFileDescriptor>
+#include <QDBusReply>
+#include <QRegularExpression>
+#include <QLoggingCategory>
+
+#include <DDBusInterface>
+
+#ifdef QT_DEBUG
+Q_LOGGING_CATEGORY(dsgApp, "dtk.core.dsg")
+#else
+Q_LOGGING_CATEGORY(dsgApp, "dtk.core.dsg", QtInfoMsg)
+#endif
 
 DCORE_BEGIN_NAMESPACE
 
@@ -34,10 +50,26 @@ QByteArray DSGApplication::id()
     return result;
 }
 
-QByteArray DSGApplication::getId(qint64)
+QByteArray DSGApplication::getId(qint64 pid)
 {
-    // TODO(zccrs): Call the org.desktopspec.ApplicationManager DBus service
-    return nullptr;
+    int pidfd = syscall(SYS_pidfd_open, pid, 0);
+    if (pidfd < 0) {
+        qCWarning(dsgApp) << "pidfd open failed:" << strerror(errno);
+        return QByteArray();
+    }
+
+    DDBusInterface infc("org.desktopspec.ApplicationManager1",
+                        "/org/desktopspec/ApplicationManager1",
+                        "org.desktopspec.ApplicationManager1");
+
+    QDBusReply<QString> reply = infc.call("Identify", QVariant::fromValue(QDBusUnixFileDescriptor(pidfd)));
+
+    if (!reply.isValid()) {
+        qCWarning(dsgApp) << "Identify from AM failed." << reply.error().message();
+        return QByteArray();
+    }
+
+    return reply.value().toLatin1();
 }
 
 DCORE_END_NAMESPACE
diff --git a/tests/data/dconf-example.meta.json b/tests/data/dconf-example.meta.json
index d591a1c..abe786f 100755
--- a/tests/data/dconf-example.meta.json
+++ b/tests/data/dconf-example.meta.json
@@ -87,6 +87,16 @@
       "name": "array value type",
       "permissions": "readwrite",
       "visibility": "public"
+    },
+    "publicConfig": {
+      "value": true,
+      "serial": 0,
+      "flags": ["user-public"],
+      "name": "public configure",
+      "name[zh_CN]": "我是公开的配置",
+      "description": "I am public configure",
+      "permissions": "readwrite",
+      "visibility": "private"
     }
   }
 }
diff --git a/tests/ut_dconfigfile.cpp b/tests/ut_dconfigfile.cpp
index 8a0ab83..77d4b32 100644
--- a/tests/ut_dconfigfile.cpp
+++ b/tests/ut_dconfigfile.cpp
@@ -485,3 +485,14 @@ TEST_F(ut_DConfigFile, setSubpath) {
         ASSERT_FALSE(config.load(LocalPrefix));
     }
 }
+
+TEST_F(ut_DConfigFile, userPublic) {
+
+    FileCopyGuard guard(":/data/dconf-example.meta.json", QString("%1/%2.json").arg(metaPath, FILE_NAME));
+    {
+        DConfigFile config(APP_ID, FILE_NAME);
+        ASSERT_TRUE(config.load(LocalPrefix));
+        ASSERT_TRUE(config.meta()->flags("publicConfig").testFlag(DConfigFile::UserPublic));
+        ASSERT_FALSE(config.meta()->flags("canExit").testFlag(DConfigFile::UserPublic));
+    }
+}