diff --git a/FoodsharingSiegen.Contracts/FoodsharingSiegen.Contracts.csproj b/FoodsharingSiegen.Contracts/FoodsharingSiegen.Contracts.csproj
index eb2460e..78e054a 100644
--- a/FoodsharingSiegen.Contracts/FoodsharingSiegen.Contracts.csproj
+++ b/FoodsharingSiegen.Contracts/FoodsharingSiegen.Contracts.csproj
@@ -6,4 +6,8 @@
         <Nullable>enable</Nullable>
     </PropertyGroup>
 
+    <ItemGroup>
+      <ProjectReference Include="..\FoodsharingSiegen.Shared\FoodsharingSiegen.Shared.csproj" />
+    </ItemGroup>
+
 </Project>
diff --git a/FoodsharingSiegen.Server/Auth/AuthService.cs b/FoodsharingSiegen.Server/Auth/AuthService.cs
index 3c47524..eb4cc06 100644
--- a/FoodsharingSiegen.Server/Auth/AuthService.cs
+++ b/FoodsharingSiegen.Server/Auth/AuthService.cs
@@ -5,6 +5,7 @@ using FoodsharingSiegen.Contracts.Entity;
 using FoodsharingSiegen.Server.Data;
 using FoodsharingSiegen.Server.Data.Service;
 using FoodsharingSiegen.Server.Service;
+using FoodsharingSiegen.Shared.Helper;
 using Microsoft.AspNetCore.Components.Authorization;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.IdentityModel.Tokens;
@@ -92,25 +93,7 @@ namespace FoodsharingSiegen.Server.Auth
             
             if (User != null)
             {
-                
-                
-                // Daten korrekt
-                var tokenHandler = new JwtSecurityTokenHandler();
-                var tokenDescriptor = new SecurityTokenDescriptor
-                {
-                    Subject = new ClaimsIdentity(new[]
-                    {
-                        new Claim(ClaimTypes.NameIdentifier, User.Id.ToString()),
-                    }),
-                    Expires = DateTime.UtcNow.AddDays(30),
-                    Issuer = "FS-Siegen",
-                    Audience = "FS-Siegen",
-                    SigningCredentials = new SigningCredentials(AuthHelper.GetSigningKey(), SecurityAlgorithms.HmacSha256Signature)
-                };
-                
-                var token = tokenHandler.CreateToken(tokenDescriptor);
-                var serializedToken = tokenHandler.WriteToken(token);
-                
+                var serializedToken = AuthHelper.CreateToken(User.Id);
                 await _localStorageService.SetItem(StorageKeys.TokenKey, serializedToken);
 
                 return new OperationResult();
diff --git a/FoodsharingSiegen.Server/Auth/TokenAuthStateProvider.cs b/FoodsharingSiegen.Server/Auth/TokenAuthStateProvider.cs
index 5e62014..59eade6 100644
--- a/FoodsharingSiegen.Server/Auth/TokenAuthStateProvider.cs
+++ b/FoodsharingSiegen.Server/Auth/TokenAuthStateProvider.cs
@@ -1,6 +1,7 @@
 using System.Security.Claims;
 using FoodsharingSiegen.Contracts;
 using FoodsharingSiegen.Server.Auth;
+using FoodsharingSiegen.Shared.Helper;
 using Microsoft.AspNetCore.Components.Authorization;
 
 namespace FoodsharingSiegen.Server.Service
diff --git a/FoodsharingSiegen.Server/Data/Service/ProspectService.cs b/FoodsharingSiegen.Server/Data/Service/ProspectService.cs
index e810c09..79e1c45 100644
--- a/FoodsharingSiegen.Server/Data/Service/ProspectService.cs
+++ b/FoodsharingSiegen.Server/Data/Service/ProspectService.cs
@@ -35,7 +35,8 @@ namespace FoodsharingSiegen.Server.Data.Service
                 if (targetProspect == null) return new OperationResult<Interaction>(new Exception("Invalid prospect id"));
                 
                 interaction.ProspectId = Guid.Empty;
-                
+                interaction.Created = DateTime.UtcNow;
+
                 targetProspect.Interactions.Add(interaction);
                 
                 await Context.SaveChangesAsync();
@@ -111,7 +112,7 @@ namespace FoodsharingSiegen.Server.Data.Service
         {
             try
             {
-                var prospects = await Context.Prospects.AsNoTracking().Include(x => x.Interactions).ThenInclude(x => x.User).OrderBy(x => x.Name).ToListAsync();
+                var prospects = await Context.Prospects.AsNoTracking().Include(x => x.Interactions.OrderBy(i => i.Date)).ThenInclude(x => x.User).OrderBy(x => x.Name).ToListAsync();
                 return new OperationResult<List<Prospect>>(prospects);
             }
             catch (Exception e)
diff --git a/FoodsharingSiegen.Server/Dialogs/AddInteractionModal.razor b/FoodsharingSiegen.Server/Dialogs/AddInteractionModal.razor
index 5c792a2..a1a44ba 100644
--- a/FoodsharingSiegen.Server/Dialogs/AddInteractionModal.razor
+++ b/FoodsharingSiegen.Server/Dialogs/AddInteractionModal.razor
@@ -1,20 +1,28 @@
 @using FoodsharingSiegen.Contracts.Entity
 
 <Modal @ref="ModalReference">
-    <ModalContent Centered Size="ModalSize.Small">
+    <ModalContent Centered Size="ModalSize.Default">
         <ModalHeader>
             <h6>@_header</h6>
             <CloseButton/>
         </ModalHeader>
         <ModalBody>
-            <Field>
-                <Select TValue="Guid" @bind-SelectedValue="SelectedUser">
-                    @foreach (var user in Users ?? new List<User>())
-                    {
-                        <SelectItem Value="@user.Id">@user.Name</SelectItem>
-                    }
-                </Select>
-            </Field>
+            <div class="row">
+                <div class="col">
+                    <label for="aim-userselect">Benutzer</label>
+                    <Select TValue="Guid" @bind-SelectedValue="SelectedUser" id="aim-userselect">
+                        @foreach (var user in Users ?? new List<User>())
+                        {
+                            <SelectItem Value="@user.Id">@user.Name</SelectItem>
+                        }
+                    </Select>
+                </div>
+                <div class="col">
+                    <label for="aim-datepicker">Datum</label>
+                    <DatePicker TValue="DateTime" @bind-Date="Interaction.Date" ElementId="aim-datepicker" Max="DateTime.UtcNow.AddDays(7)"/>
+                </div>
+            </div>
+
             @if (_showInfo)
             {
                 <Field>
diff --git a/FoodsharingSiegen.Shared/FoodsharingSiegen.Shared.csproj b/FoodsharingSiegen.Shared/FoodsharingSiegen.Shared.csproj
new file mode 100644
index 0000000..2d1eb67
--- /dev/null
+++ b/FoodsharingSiegen.Shared/FoodsharingSiegen.Shared.csproj
@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net6.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.16.0" />
+    </ItemGroup>
+
+</Project>
diff --git a/FoodsharingSiegen.Server/Auth/AuthHelper.cs b/FoodsharingSiegen.Shared/Helper/AuthHelper.cs
similarity index 67%
rename from FoodsharingSiegen.Server/Auth/AuthHelper.cs
rename to FoodsharingSiegen.Shared/Helper/AuthHelper.cs
index 7390a65..48d2c08 100644
--- a/FoodsharingSiegen.Server/Auth/AuthHelper.cs
+++ b/FoodsharingSiegen.Shared/Helper/AuthHelper.cs
@@ -1,15 +1,45 @@
 using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
 using System.Security.Cryptography;
 using System.Text;
 using Microsoft.IdentityModel.Tokens;
 
-namespace FoodsharingSiegen.Server.Auth
+namespace FoodsharingSiegen.Shared.Helper
 {
     /// <summary>
     /// The auth helper class (a. beging, 04.04.2022)
     /// </summary>
     public static class AuthHelper
     {
+        #region Public Method CreateToken
+
+        /// <summary>
+        /// Creates the token using the specified user id (a. beging, 04.04.2022)
+        /// </summary>
+        /// <param name="userId">The user id</param>
+        /// <returns>The string</returns>
+        public static string CreateToken(Guid userId)
+        {
+            var tokenHandler = new JwtSecurityTokenHandler();
+            var tokenDescriptor = new SecurityTokenDescriptor
+            {
+                Subject = new ClaimsIdentity(new[]
+                {
+                    new Claim(ClaimTypes.NameIdentifier, userId.ToString()),
+                    new Claim("CanDoShit","yes")
+                }),
+                Expires = DateTime.UtcNow.AddDays(30),
+                Issuer = Issuer,
+                Audience = Audience,
+                SigningCredentials = new SigningCredentials(GetSigningKey(), SecurityAlgorithms.HmacSha256Signature)
+            };
+            
+            var token = tokenHandler.CreateToken(tokenDescriptor);
+            return tokenHandler.WriteToken(token);
+        }
+
+        #endregion
+
         #region Public Method Decrypt
 
         /// <summary>
@@ -61,16 +91,6 @@ namespace FoodsharingSiegen.Server.Auth
 
         #endregion
 
-        #region Public Method GetSigningKey
-
-        /// <summary>
-        /// Gets the signing key (a. beging, 04.04.2022)
-        /// </summary>
-        /// <returns>The security key</returns>
-        public static SecurityKey GetSigningKey() => new SymmetricSecurityKey(Encoding.ASCII.GetBytes(SigningKey));
-
-        #endregion
-
         #region Public Method ValidateToken
 
         /// <summary>
@@ -89,10 +109,10 @@ namespace FoodsharingSiegen.Server.Auth
                     IssuerSigningKey = GetSigningKey(),
 
                     ValidateAudience = true,
-                    ValidAudience = "FS-Siegen",
+                    ValidAudience = Audience,
 
                     ValidateIssuer = true,
-                    ValidIssuer = "FS-Siegen"
+                    ValidIssuer = Issuer
                 });
 
                 return result.IsValid;
@@ -125,9 +145,29 @@ namespace FoodsharingSiegen.Server.Auth
 
         #endregion
 
+        #region Private Method GetSigningKey
+
+        /// <summary>
+        /// Gets the signing key (a. beging, 04.04.2022)
+        /// </summary>
+        /// <returns>The security key</returns>
+        private static SecurityKey GetSigningKey() => new SymmetricSecurityKey(Encoding.ASCII.GetBytes(SigningKey));
+
+        #endregion
+
         /// <summary>
         /// The signing key
         /// </summary>
-        public const string SigningKey = "2uasw2§$%1nd47n9s43&%Zs3529s23&/%AW";
+        private const string SigningKey = "2uasw2§$%1nd47n9s43&%Zs3529s23&/%AW";
+
+        /// <summary>
+        /// The audience
+        /// </summary>
+        private const string Audience = "FS-Siegen";
+
+        /// <summary>
+        /// The issuer
+        /// </summary>
+        private const string Issuer = "FS-Siegen";
     }
 }
\ No newline at end of file
diff --git a/FoodsharingSiegen.sln b/FoodsharingSiegen.sln
index de13e0f..8e33901 100644
--- a/FoodsharingSiegen.sln
+++ b/FoodsharingSiegen.sln
@@ -4,6 +4,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FoodsharingSiegen.Server",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FoodsharingSiegen.Contracts", "FoodsharingSiegen.Contracts\FoodsharingSiegen.Contracts.csproj", "{F39AE3B4-E4CE-421E-AFB0-E9C9B3B670FE}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FoodsharingSiegen.Shared", "FoodsharingSiegen.Shared\FoodsharingSiegen.Shared.csproj", "{625167D9-A375-40AF-82DE-87484519F6D9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -18,5 +20,9 @@ Global
 		{F39AE3B4-E4CE-421E-AFB0-E9C9B3B670FE}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F39AE3B4-E4CE-421E-AFB0-E9C9B3B670FE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F39AE3B4-E4CE-421E-AFB0-E9C9B3B670FE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{625167D9-A375-40AF-82DE-87484519F6D9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{625167D9-A375-40AF-82DE-87484519F6D9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{625167D9-A375-40AF-82DE-87484519F6D9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{625167D9-A375-40AF-82DE-87484519F6D9}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal