diff --git a/Akari.Prototype.Server/Services/ApplicationsManager.cs b/Akari.Prototype.Server/Services/ApplicationsManager.cs
index d1cbb08..d572d75 100644
--- a/Akari.Prototype.Server/Services/ApplicationsManager.cs
+++ b/Akari.Prototype.Server/Services/ApplicationsManager.cs
@@ -108,6 +108,9 @@ namespace Akari.Prototype.Server.Services
             return _applications.ContainsKey(applicationName);
         }
 
+        public bool IsFingerprintRegistered(string applicationName, string fingerprintName) => _applications.TryGetValue(applicationName, out var application)
+                                                                                            && application.Fingerprints.Contains(fingerprintName);
+
         public bool Remove(string applicationName)
         {
             if (!_applications.TryGetValue(applicationName, out var application))
diff --git a/Akari.Prototype.Server/Services/IApplicationsManager.cs b/Akari.Prototype.Server/Services/IApplicationsManager.cs
index c6f0ae7..0bf08e5 100644
--- a/Akari.Prototype.Server/Services/IApplicationsManager.cs
+++ b/Akari.Prototype.Server/Services/IApplicationsManager.cs
@@ -13,6 +13,8 @@ namespace Akari.Prototype.Server.Services
 
         bool Contains(string applicationName);
 
+        bool IsFingerprintRegistered(string applicationName, string fingerprintName);
+
         bool Remove(string applicationName);
 
         bool AddFingerprint(string applicationName, string fingerprintName);