diff --git a/packages/fingerprint-generator/src/fingerprint-generator.ts b/packages/fingerprint-generator/src/fingerprint-generator.ts
index 6be64644..c580ae71 100644
--- a/packages/fingerprint-generator/src/fingerprint-generator.ts
+++ b/packages/fingerprint-generator/src/fingerprint-generator.ts
@@ -24,9 +24,34 @@ export type ScreenFingerprint = {
     hasHDR: boolean;
 }
 
+export type Brand = {
+    brand: string;
+    version: string;
+}
+
+export type UserAgentData = {
+    brands: Brand[];
+    mobile: boolean;
+    platform: string;
+    architecture: string;
+    bitness: string;
+    fullVersionList: Brand[];
+    model: string;
+    platformVersion: string;
+    uaFullVersion: string;
+}
+
+export interface ExtraProperties {
+    vendorFlavors: string[];
+    isBluetoothSupported: boolean;
+    globalPrivacyControl: null;
+    pdfViewerEnabled: boolean;
+    installedApps: any[];
+}
+
 export type NavigatorFingerprint = {
     userAgent: string;
-    userAgentData: Record<string, string>;
+    userAgentData: UserAgentData;
     doNotTrack: string;
     appCodeName: string;
     appName: string;
@@ -43,8 +68,8 @@ export type NavigatorFingerprint = {
     vendor: string;
     vendorSub: string;
     maxTouchPoints?: number;
-    extraProperties: Record<string, string>;
-}
+    extraProperties: ExtraProperties;
+};
 
 export type VideoCard = {
     renderer: string;