diff --git a/Source/ProofOfConcept/Program.cs b/Source/ProofOfConcept/Program.cs
index 6aae7a5..aad6a6f 100644
--- a/Source/ProofOfConcept/Program.cs
+++ b/Source/ProofOfConcept/Program.cs
@@ -51,6 +51,7 @@ if (app.Environment.IsDevelopment())
     });
     app.MapGet("/CheckRegisteredApplication", ([FromServices] TeslaAuthenticatorService service) => service.CheckApplicationRegistrationAsync());
     app.MapGet("/RegisterApplication", ([FromServices] TeslaAuthenticatorService service) => service.RegisterApplicationAsync());
+    app.MapGet("/Authorize", ([FromServices] TeslaAuthenticatorService service) => new RedirectResult(service.GetAplicationAuthorizationURL()));
 }
 
 //Map static assets
diff --git a/Source/ProofOfConcept/ProofOfConcept.csproj b/Source/ProofOfConcept/ProofOfConcept.csproj
index 5e55dab..d7a56a2 100644
--- a/Source/ProofOfConcept/ProofOfConcept.csproj
+++ b/Source/ProofOfConcept/ProofOfConcept.csproj
@@ -31,7 +31,7 @@
 
     <ItemGroup>
       <None Update="Resources\Signature\public-key.pem">
-        <CopyToOutputDirectory>Never</CopyToOutputDirectory>
+        <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
       </None>
     </ItemGroup>
 
diff --git a/Source/ProofOfConcept/Services/TeslaAuthenticatorService.cs b/Source/ProofOfConcept/Services/TeslaAuthenticatorService.cs
index faecc32..81b4224 100644
--- a/Source/ProofOfConcept/Services/TeslaAuthenticatorService.cs
+++ b/Source/ProofOfConcept/Services/TeslaAuthenticatorService.cs
@@ -1,4 +1,6 @@
 using System.Net.Http.Headers;
+using System.Security.Cryptography;
+using System.Text;
 using System.Text.Json;
 using System.Text.Json.Nodes;
 using Microsoft.Extensions.Caching.Memory;
@@ -220,12 +222,73 @@ public class TeslaAuthenticatorService
         httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
         httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", partnerToken.AccessToken);
 
-        //Send request
-        HttpResponseMessage response = await httpClient.GetAsync($"{euBaseURL}/api/1/partner_accounts/public_key?domain={this.configuration.Domain}", cancellationToken);
-        string responseBody = await response.Content.ReadAsStringAsync(cancellationToken);
-        
-        logger.LogInformation("Application registration result: {Result}", responseBody);
-        return new Result<bool>();
+        try
+        {
+            //Send request
+            HttpResponseMessage response = await httpClient.GetAsync($"{euBaseURL}/api/1/partner_accounts/public_key?domain={this.configuration.Domain}", cancellationToken);
+            string responseBody = await response.Content.ReadAsStringAsync(cancellationToken);
+            logger.LogInformation("Application registration result: {Result}", responseBody);
+            
+            //Parse response
+            using JsonDocument? doc = JsonDocument.Parse(responseBody);
+            string publicKeyHex = doc.RootElement.GetProperty("response").GetProperty("public_key").GetString() ?? throw new JsonException("Public key not found in response");
+            
+            //Public key bytes
+            byte[] bytes = Convert.FromHexString(publicKeyHex);
+            
+            //Get bytes from PEM key
+            string pem = await File.ReadAllTextAsync("Resources/Signature/public-key.pem", cancellationToken: cancellationToken);;
+            string[] lines = pem.Split('\n')
+                .Select(l => l.Trim())
+                .Where(l => !string.IsNullOrEmpty(l) &&
+                            !l.StartsWith("-----"))
+                .ToArray();
+            
+            string base64 = string.Join("", lines);
+            byte[] pemBytes = Convert.FromBase64String(base64);
+            
+            // Parse the PEM with ECDsa to get the raw Q.X||Q.Y
+            using var ecdsa = ECDsa.Create();
+            ecdsa.ImportSubjectPublicKeyInfo(pemBytes, out _);
+            ECParameters parameters = ecdsa.ExportParameters(false);
+            byte[]? x = parameters.Q.X;
+            byte[]? y = parameters.Q.Y;
+
+            if (x is null || y is null)
+                throw new CryptographicException("Invalid PEM file");
+            
+            // Assemble into uncompressed SEC1 format
+            byte[] pemKeyBytes = new byte[1 + x.Length + y.Length];
+            pemKeyBytes[0] = 0x04; // uncompressed marker
+            Buffer.BlockCopy(x, 0, pemKeyBytes, 1, x.Length);
+            Buffer.BlockCopy(y, 0, pemKeyBytes, 1 + x.Length, y.Length);
+            
+            // Compare
+            bool match = bytes.SequenceEqual(pemKeyBytes);
+            
+            return Result.Success(match);
+        }
+        catch (Exception e)
+        {
+            logger.LogError(e, "Error while checking application registration");
+            return Result.Fail(e);
+        }
+    }
+
+    public string GetAplicationAuthorizationURL()
+    {
+        //https://auth.tesla.com/oauth2/v3/authorize?&client_id=$CLIENT_ID&locale=en-US&prompt=login&redirect_uri=$REDIRECT_URI&response_type=code&scope=openid%20vehicle_device_data%20offline_access&state=$STATE
+        StringBuilder sb = new StringBuilder();
+        sb.Append("https://auth.tesla.com/oauth2/v3/authorize?response_type=code");
+        sb.AppendFormat("&client_id={0}", this.configuration.ClientID);
+        sb.AppendFormat("&redirect_uri={0}");
+        sb.AppendFormat("&scope=openid offline_access vehicle_device_data vehicle_location");
+        sb.AppendFormat("&state=1234567890");
+        sb.AppendFormat("&nonce=1234567890");
+        sb.AppendFormat("&prompt_missing_scopes=true");
+        sb.AppendFormat("&require_requested_scopes=true");
+        sb.AppendFormat("&show_keypair_step=true");
+        return sb.ToString();
     }
 }