diff --git a/Extensions/XModelExtensions.cs b/Extensions/XModelExtensions.cs
new file mode 100644
index 0000000..3f11a1b
--- /dev/null
+++ b/Extensions/XModelExtensions.cs
@@ -0,0 +1,34 @@
+using xCommons.Extensions;
+using xModels.Dtos;
+
+namespace xModels.Extensions
+{
+    public static class XModelExtensions
+    {
+        /// <summary>
+        /// Check to XDevice instance to be same or not
+        /// </summary>
+        /// <param name="source"></param>
+        /// <param name="dest"></param>
+        /// <returns></returns>
+        public static bool IsSameAs(this XDeviceDto source, XDeviceDto dest)
+        {
+            //
+            if (source.IsNull() ||
+                dest.IsNull())
+            {
+                return false;
+            }
+
+            //
+            var isSame = source.Os.ToNormalString() == dest.Os.ToNormalString() &&
+                source.OsVersion.ToNormalString() == dest.OsVersion.ToNormalString() &&
+                source.Browser.ToNormalString() == dest.Browser.ToNormalString() &&
+                source.UserAgent.ToNormalString() == dest.UserAgent.ToNormalString() &&
+                source.DeviceType == dest.DeviceType;
+
+            //
+            return isSame;
+        }
+    }
+}
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