diff --git a/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor b/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor
index 987f8e1..aac36c2 100644
--- a/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor
+++ b/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor
@@ -33,17 +33,31 @@
             </div>
         </div>
     </div>
-    <div class="card-body p-2">
-        <div class="row">
-            <div class="col-12 fs-4 text-center">
+    <div class="card-body p-2 bg-dark bg-gradient text-light">
+        <div class="d-flex justify-content-around">
+            <div class="px-2 fs-4 text-center text-warning">
                 Auth Code
             </div>
-            <div class="col-12 fs-1 text-center fw-bold">
-                12345678
+        </div>
+        <div class="d-flex justify-content-around my-3">
+            <div class="px-2 w-100 fs-1 text-center fw-bold bg-info bg-opacity-50 bg-gradient">
+                @($"{passcode:00 00 00 00}")
             </div>
+            @* <div class="col-12 fs-1 text-center fw-bold">
+                @($"{passcode}")
+            </div> *@
         </div>
         <div class="d-flex my-2">
-            <div class="px-2">Istruzioni enroll: per autorizzare l'applicativo comunicare il codice di auth mostrato al personale EgalWare. Puoi farlovia telefono numero <b>035-460560</b> oppure via email all'indirizzo <a href="mailto:info@egalware.com">info@egalware.com</a></div>
+            <div class="px-2">
+                Istruzioni enroll: per autorizzare l'applicativo comunicare il codice di auth mostrato al personale EgalWare.<br />
+                Puoi farlo tramite telefono al numero <b>035-460560</b> oppure via email all'indirizzo <a href="mailto:info@egalware.com">info@egalware.com</a>
+            </div>
+            @* <div class="px-2 w-25 text-center bg-dark">
+                <CircleGaugeMulti Titolo="@($"{tCounter:00}")" Testo="expiry sec" maxVal="@startCounter" ListInner="@SegmTimer" ShowCircleBtn="true"></CircleGaugeMulti>
+            </div> *@
+            <div class="px-2 w-25">
+                <CircleGauge Titolo="@($"{tCounter:00}")" Testo="" maxVal="@startCounter" currVal="@tCounter" StrokeColorVal="@bandColor" ShowCircleBtn="false"></CircleGauge>
+            </div>
         </div>
     </div>
 </div>
diff --git a/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor.cs b/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor.cs
index 523e5db..3d9fe2d 100644
--- a/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor.cs
+++ b/EgwControlCenter.App/Components/Compo/AuthChallengeMan.razor.cs
@@ -1,11 +1,32 @@
 using EgwControlCenter.Core.Models;
 using EgwControlCenter.Core;
 using Microsoft.AspNetCore.Components;
+using EgwCoreLib.Razor;
 
 namespace EgwControlCenter.App.Components.Compo
 {
     public partial class AuthChallengeMan : IDisposable
     {
+        #region Protected Fields
+
+        protected int tCounter = 0;
+
+        #endregion Protected Fields
+
+        #region Private Fields
+
+        private string bandColor = "13FD13";
+        private int passcode = 0;
+
+        private PeriodicTimer periodicTimer = new(TimeSpan.FromSeconds(1));
+        private bool remoteCalling = false;
+
+        private bool ReqSetup = true;
+
+        private int startCounter = 20;
+
+        #endregion Private Fields
+
         #region Public Properties
 
         [Parameter]
@@ -13,16 +34,6 @@ namespace EgwControlCenter.App.Components.Compo
 
         #endregion Public Properties
 
-        #region Public Methods
-
-        public void Dispose()
-        {
-            ACService.EA_ConfigUpdated -= ACService_EA_ConfigUpdated;
-            ACService.EA_RemoteCalling -= ACService_EA_RemoteCalling;
-        }
-
-        #endregion Public Methods
-
         #region Protected Properties
 
         [Inject]
@@ -52,76 +63,35 @@ namespace EgwControlCenter.App.Components.Compo
             set => ACService.RefreshPeriod = value;
         }
 
-        /// <summary>
-        /// Gestione evento chiamata verso server
-        /// </summary>
-        private async void ACService_EA_RemoteCalling()
-        {
-            RemoteCallActive = ACService.CloudCallActive;
-            await InvokeAsync(StateHasChanged);
-        }
-
         protected bool RemoteCallActive { get; set; } = false;
+
         #endregion Protected Properties
 
-        #region Protected Methods
-
-        protected void DoCancel()
-        {
-            ACService.DoReloadConfig();
-        }
-
-        protected void DoReset()
-        {
-            ACService.ResetConf();
-        }
-
-        protected void DoSave()
-        {
-            ACService.DoSaveConfig();
-            ACService.DoReloadConfig();
-        }
-
-        protected override void OnInitialized()
-        {
-            ACService.EA_ConfigUpdated += ACService_EA_ConfigUpdated;
-            ACService.EA_RemoteCalling += ACService_EA_RemoteCalling;
-        }
-
-        protected override void OnParametersSet()
-        {
-            ForceReload();
-        }
-
-        protected void SetNumRec(int newNum)
-        {
-            numRecord = newNum;
-            currPage = 1;
-            ForceReload();
-        }
-
-        protected void SetPage(int newNum)
-        {
-            currPage = newNum;
-            ForceReload();
-        }
-
-        protected async void ToggleSetup()
-        {
-            ReqSetup = !ReqSetup;
-            await EC_GotoSetup.InvokeAsync(ReqSetup);
-        }
-
-        #endregion Protected Methods
-
-        #region Private Fields
-
-        private bool ReqSetup = true;
-
-        #endregion Private Fields
-
         #region Private Properties
 
+        private string btnSyncClass
+        {
+            get
+            {
+                string answ = "";
+                if (remoteCalling)
+                {
+                    answ = "btn-info";
+                }
+                else
+                {
+                    answ = ChannelAuth ? "btn-outline-success" : "btn-warning";
+                }
+
+                return answ;
+            }
+        }
+
+        private bool ChannelAuth
+        {
+            get => ACService.ChannelAuth;
+        }
+
         private int currPage { get; set; } = 1;
 
         private bool isLoading { get; set; } = false;
@@ -153,6 +123,72 @@ namespace EgwControlCenter.App.Components.Compo
 
         #endregion Private Properties
 
+        #region Public Methods
+
+        public void Dispose()
+        {
+            periodicTimer?.Dispose();
+            ACService.EA_ConfigUpdated -= ACService_EA_ConfigUpdated;
+            ACService.EA_RemoteCalling -= ACService_EA_RemoteCalling;
+        }
+
+        #endregion Public Methods
+
+        #region Protected Methods
+
+        protected void DoCancel()
+        {
+            ACService.DoReloadConfig();
+        }
+
+        protected void DoReset()
+        {
+            ACService.ResetConf();
+        }
+
+        protected void DoSave()
+        {
+            ACService.DoSaveConfig();
+            ACService.DoReloadConfig();
+        }
+
+        protected override void OnInitialized()
+        {
+            // mi faccio staccare un codice di auth da remoto
+            passcode = ACService.GetAuthPassocde();
+            tCounter = startCounter;
+            RunTimer();
+            // aggancio gestione eventi
+            ACService.EA_ConfigUpdated += ACService_EA_ConfigUpdated;
+            ACService.EA_RemoteCalling += ACService_EA_RemoteCalling;
+        }
+
+        protected override void OnParametersSet()
+        {
+            ForceReload();
+        }
+
+        protected void SetNumRec(int newNum)
+        {
+            numRecord = newNum;
+            currPage = 1;
+            ForceReload();
+        }
+
+        protected void SetPage(int newNum)
+        {
+            currPage = newNum;
+            ForceReload();
+        }
+
+        protected async void ToggleSetup()
+        {
+            ReqSetup = !ReqSetup;
+            await EC_GotoSetup.InvokeAsync(ReqSetup);
+        }
+
+        #endregion Protected Methods
+
         #region Private Methods
 
         private void ACService_EA_ConfigUpdated()
@@ -160,6 +196,15 @@ namespace EgwControlCenter.App.Components.Compo
             ForceReload();
         }
 
+        /// <summary>
+        /// Gestione evento chiamata verso server
+        /// </summary>
+        private async void ACService_EA_RemoteCalling()
+        {
+            RemoteCallActive = ACService.CloudCallActive;
+            await InvokeAsync(StateHasChanged);
+        }
+
         private void ForceReload()
         {
             totalCount = SearchRecords.Count;
@@ -169,33 +214,36 @@ namespace EgwControlCenter.App.Components.Compo
                             .ToList();
         }
 
-        #endregion Private Methods
-
-        private string btnSyncClass
+        private async void RunTimer()
         {
-            get
+            while (await periodicTimer.WaitForNextTickAsync())
             {
-                string answ = "";
-                if (remoteCalling)
+                tCounter--;
+                if (tCounter < 0)
                 {
-                    answ = "btn-info";
+                    tCounter = startCounter;
+                }
+                // aggiungo colore secondo valore...
+                if (tCounter > startCounter * 0.6)
+                {
+                    bandColor = "#00FF00";
+                }
+                else if (tCounter > startCounter * 0.3)
+                {
+                    bandColor = "#26ED26";
+                }
+                else if (tCounter > startCounter * 0.1)
+                {
+                    bandColor = "#DCFD15";
                 }
                 else
                 {
-                    answ = ChannelAuth ? "btn-outline-success" : "btn-warning";
+                    bandColor = "#DC2615";
                 }
-
-                return answ;
+                await InvokeAsync(StateHasChanged);
             }
         }
 
-        private bool ChannelAuth
-        {
-            get => ACService.ChannelAuth;
-        }
-
-        private bool remoteCalling = false;
-
         private async Task TrySync()
         {
             remoteCalling = true;
@@ -215,5 +263,7 @@ namespace EgwControlCenter.App.Components.Compo
             await Task.Delay(10);
             remoteCalling = false;
         }
+
+        #endregion Private Methods
     }
 }
\ No newline at end of file
diff --git a/EgwControlCenter.App/EgwControlCenter.App.csproj b/EgwControlCenter.App/EgwControlCenter.App.csproj
index 96c37b3..ef07fb3 100644
--- a/EgwControlCenter.App/EgwControlCenter.App.csproj
+++ b/EgwControlCenter.App/EgwControlCenter.App.csproj
@@ -5,7 +5,7 @@
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
     <ImplicitUsings>enable</ImplicitUsings>
-    <Version>1.1.2412.3011</Version>
+    <Version>1.1.2412.3016</Version>
     <Configurations>Debug;Release;DEBUG_Local</Configurations>
   </PropertyGroup>
   <ItemGroup>
diff --git a/EgwControlCenter.App/Properties/PublishProfiles/ClickOnceProfile.pubxml b/EgwControlCenter.App/Properties/PublishProfiles/ClickOnceProfile.pubxml
index 7c79f57..60a8d5f 100644
--- a/EgwControlCenter.App/Properties/PublishProfiles/ClickOnceProfile.pubxml
+++ b/EgwControlCenter.App/Properties/PublishProfiles/ClickOnceProfile.pubxml
@@ -4,8 +4,8 @@ https://go.microsoft.com/fwlink/?LinkID=208121.
 -->
 <Project>
   <PropertyGroup>
-    <ApplicationRevision>3011</ApplicationRevision>
-    <ApplicationVersion>1.1.2412.3011</ApplicationVersion>
+    <ApplicationRevision>3016</ApplicationRevision>
+    <ApplicationVersion>1.1.2412.3016</ApplicationVersion>
     <BootstrapperEnabled>True</BootstrapperEnabled>
     <Configuration>Release</Configuration>
     <CreateWebPageOnPublish>True</CreateWebPageOnPublish>
diff --git a/EgwControlCenter.App/wwwroot/css/app.css b/EgwControlCenter.App/wwwroot/css/app.css
index 2fcd330..89c9b1b 100644
--- a/EgwControlCenter.App/wwwroot/css/app.css
+++ b/EgwControlCenter.App/wwwroot/css/app.css
@@ -29,6 +29,10 @@ a,
 .btn-link {
   color: #0071c1;
 }
+.text-center {
+  display: flex;
+  justify-content: center;
+}
 .btn-primary {
   color: #fff;
   background-color: #1b6ec2;
diff --git a/EgwControlCenter.App/wwwroot/css/app.less b/EgwControlCenter.App/wwwroot/css/app.less
index 8f57c7f..3f9e6b6 100644
--- a/EgwControlCenter.App/wwwroot/css/app.less
+++ b/EgwControlCenter.App/wwwroot/css/app.less
@@ -23,6 +23,11 @@ a, .btn-link {
     color: #0071c1;
 }
 
+.text-center {
+    display: flex;
+    justify-content: center;
+}
+
 .btn-primary {
     color: #fff;
     background-color: #1b6ec2;
diff --git a/EgwControlCenter.App/wwwroot/css/app.min.css b/EgwControlCenter.App/wwwroot/css/app.min.css
index b925241..6639967 100644
--- a/EgwControlCenter.App/wwwroot/css/app.min.css
+++ b/EgwControlCenter.App/wwwroot/css/app.min.css
@@ -1 +1 @@
-h1,h2,h3,h4,h5,h6,b,display-1,display-2,display-3,display-4{font-family:'Lato',sans-serif;}html,body{font-family:'Roboto Condensed',sans-serif;line-height:1.3;}h1:focus{outline:0;}a,.btn-link{color:#0071c1;}.btn-primary{color:#fff;background-color:#1b6ec2;border-color:#1861ac;}.valid.modified:not([type=checkbox]){outline:1px solid #26b050;}.invalid{outline:1px solid #f00;}.validation-message{color:#f00;}#blazor-error-ui{background:#ffffe0;bottom:0;box-shadow:0 -1px 2px rgba(0,0,0,.2);display:none;left:0;padding:.6rem 1.25rem .7rem 1.25rem;position:fixed;width:100%;z-index:1000;}#blazor-error-ui .dismiss{cursor:pointer;position:absolute;right:.75rem;top:.5rem;}.bottom-row{color:#dedede;background-color:#000;height:1.6rem;align-items:center;}@media(max-width:640px){body{font-size:.8em;line-height:1.1;}}@media(max-width:1650px){body{font-size:.9em;line-height:1.2;}}
\ No newline at end of file
+h1,h2,h3,h4,h5,h6,b,display-1,display-2,display-3,display-4{font-family:'Lato',sans-serif;}html,body{font-family:'Roboto Condensed',sans-serif;line-height:1.3;}h1:focus{outline:0;}a,.btn-link{color:#0071c1;}.text-center{display:flex;justify-content:center;}.btn-primary{color:#fff;background-color:#1b6ec2;border-color:#1861ac;}.valid.modified:not([type=checkbox]){outline:1px solid #26b050;}.invalid{outline:1px solid #f00;}.validation-message{color:#f00;}#blazor-error-ui{background:#ffffe0;bottom:0;box-shadow:0 -1px 2px rgba(0,0,0,.2);display:none;left:0;padding:.6rem 1.25rem .7rem 1.25rem;position:fixed;width:100%;z-index:1000;}#blazor-error-ui .dismiss{cursor:pointer;position:absolute;right:.75rem;top:.5rem;}.bottom-row{color:#dedede;background-color:#000;height:1.6rem;align-items:center;}@media(max-width:640px){body{font-size:.8em;line-height:1.1;}}@media(max-width:1650px){body{font-size:.9em;line-height:1.2;}}
\ No newline at end of file
diff --git a/EgwControlCenter.Core/AppControlService.cs b/EgwControlCenter.Core/AppControlService.cs
index 076c790..e191550 100644
--- a/EgwControlCenter.Core/AppControlService.cs
+++ b/EgwControlCenter.Core/AppControlService.cs
@@ -81,6 +81,19 @@ namespace EgwControlCenter.Core
             }
         }
 
+        private Random rnd = new Random();
+
+        /// <summary>
+        /// Restituisce un codice di auth temporaneo da autorizzare
+        /// </summary>
+        /// <returns></returns>
+        public int GetAuthPassocde()
+        {
+            // fixme todo !!! implementare da lettura remota oppure gen locale...
+            int tempCode = rnd.Next(10000000, 99999999);
+            return tempCode;
+        }
+
         /// <summary>
         /// verifica autorizzazione al canale, ovvero
         /// - deve avere tutte le chiavi/registri di comunicazione