diff --git a/Ink Canvas/Helpers/DeviceIdentifier.cs b/Ink Canvas/Helpers/DeviceIdentifier.cs
index 274d46e7..0ee14e12 100644
--- a/Ink Canvas/Helpers/DeviceIdentifier.cs	
+++ b/Ink Canvas/Helpers/DeviceIdentifier.cs	
@@ -2782,113 +2782,5 @@ namespace Ink_Canvas.Helpers
                 }
             }
         }
-
-        /// <summary>
-        /// 加载现有使用统计数据（从主文件或备份）
-        /// </summary>
-        private static UsageStats LoadUsageStats()
-        {
-            // 尝试从主文件加载
-            if (File.Exists(UsageStatsFilePath))
-            {
-                try
-                {
-                    string json = File.ReadAllText(UsageStatsFilePath);
-                    return JsonConvert.DeserializeObject<UsageStats>(json);
-                }
-                catch
-                {
-                    // 主文件损坏，尝试从备份加载
-                    if (File.Exists(BackupUsageStatsPath))
-                    {
-                        try
-                        {
-                            string backupJson = File.ReadAllText(BackupUsageStatsPath);
-                            return JsonConvert.DeserializeObject<UsageStats>(backupJson);
-                        }
-                        catch
-                        {
-                            // 可继续尝试其他备份路径
-                            return LoadFromOtherBackups();
-                        }
-                    }
-                }
-            }
-            return null;
-        }
-
-        /// <summary>
-        /// 从其他备份路径加载数据
-        /// </summary>
-        private static UsageStats LoadFromOtherBackups()
-        {
-            // 尝试二级备份
-            if (File.Exists(SecondaryUsageBackupPath))
-            {
-                try
-                {
-                    return JsonConvert.DeserializeObject<UsageStats>(File.ReadAllText(SecondaryUsageBackupPath));
-                }
-                catch { }
-            }
-
-            // 尝试三级备份
-            if (File.Exists(TertiaryUsageBackupPath))
-            {
-                try
-                {
-                    return JsonConvert.DeserializeObject<UsageStats>(File.ReadAllText(TertiaryUsageBackupPath));
-                }
-                catch { }
-            }
-
-            // 尝试四级备份
-            if (File.Exists(QuaternaryUsageBackupPath))
-            {
-                try
-                {
-                    return JsonConvert.DeserializeObject<UsageStats>(File.ReadAllText(QuaternaryUsageBackupPath));
-                }
-                catch { }
-            }
-
-            return null;
-        }
-
-        /// <summary>
-        /// 保存使用统计数据到所有备份位置
-        /// </summary>
-        private static void SaveUsageStatsToAllLocations(UsageStats stats)
-        {
-            string json = JsonConvert.SerializeObject(stats, Formatting.Indented);
-            
-            // 保存到主文件
-            SaveToFile(UsageStatsFilePath, json);
-            // 保存到多重备份路径
-            SaveToFile(BackupUsageStatsPath, json);
-            SaveToFile(SecondaryUsageBackupPath, json);
-            SaveToFile(TertiaryUsageBackupPath, json);
-            SaveToFile(QuaternaryUsageBackupPath, json);
-        }
-
-        /// <summary>
-        /// 辅助方法：保存内容到文件（确保目录存在）
-        /// </summary>
-        private static void SaveToFile(string path, string content)
-        {
-            try
-            {
-                string dir = Path.GetDirectoryName(path);
-                if (!Directory.Exists(dir))
-                {
-                    Directory.CreateDirectory(dir);
-                }
-                File.WriteAllText(path, content);
-            }
-            catch (Exception ex)
-            {
-                LogHelper.WriteLogToFile($"保存文件 {path} 失败: {ex.Message}", LogHelper.LogType.Warning);
-            }
-        }
     }
 }