diff --git a/src/api/config.ts b/src/api/config.ts
index 5a3841e7..d544b176 100644
--- a/src/api/config.ts
+++ b/src/api/config.ts
@@ -4,6 +4,7 @@ import Http from '../http';
 import Logger from '../logger';
 import Session from '../session';
 import Navigator from '../navigator';
+import Storage from '../storage';
 
 import type { RadarTrackParams } from '../types';
 
@@ -16,12 +17,14 @@ class ConfigAPI {
       return;
     }
 
+    const id = Storage.getItem(Storage.ID) || undefined;
     const deviceId = params.deviceId || Device.getDeviceId();
     const installId = params.installId || Device.getInstallId();
     const sessionId = Session.getSessionId();
     const locationAuthorization = await Navigator.getPermissionStatus();
 
-    const data = {
+    const data: any = {
+      id,
       deviceId,
       installId,
       sessionId,
diff --git a/src/api/conversions.ts b/src/api/conversions.ts
index 60d10803..12b63410 100644
--- a/src/api/conversions.ts
+++ b/src/api/conversions.ts
@@ -10,17 +10,20 @@ class ConversionsAPI {
     const options = Config.get();
 
     const name = params.name;
-    const userId = params.userId || Storage.getItem(Storage.USER_ID);
-    const deviceId = params.deviceId || Device.getDeviceId();
-    const installId = params.installId || Device.getInstallId();
     const metadata = params.metadata || {};
     const createdAt = params.createdAt;
 
+    const id = Storage.getItem(Storage.ID);
+    const userId = params.userId || Storage.getItem(Storage.USER_ID);
+    const deviceId = params.deviceId || Device.getDeviceId();
+    const installId = params.installId || Device.getInstallId();
+    
     if (params.revenue) {
       metadata.revenue = params.revenue;
     }
 
     const data: any = {
+      id,
       name,
       userId,
       deviceId,
diff --git a/src/api/track.ts b/src/api/track.ts
index 3862a44a..4970d6b9 100644
--- a/src/api/track.ts
+++ b/src/api/track.ts
@@ -36,6 +36,7 @@ class TrackAPI {
     }
 
     // user indentification fields
+    const id = Storage.getItem(Storage.ID) || undefined; // `undefined` so it's removed from any fields
     const userId = params.userId || Storage.getItem(Storage.USER_ID);
     const deviceId = params.deviceId || Device.getDeviceId();
     const installId = params.installId || Device.getInstallId();
@@ -84,6 +85,7 @@ class TrackAPI {
       userId,
       tripOptions,
       timeZone,
+      id,
     };
 
     let response: any;
@@ -99,6 +101,7 @@ class TrackAPI {
         method: 'GET',
         path: 'config',
         data: {
+          id,
           deviceId,
           installId,
           sessionId,
@@ -182,6 +185,10 @@ class TrackAPI {
         _id,
       } as RadarTrackVerifiedResponse;
 
+      if (user) {
+        Storage.setItem(Storage.ID, user._id);
+      }
+
       if (options.debug) {
         trackRes.response = response;
       }
@@ -189,6 +196,7 @@ class TrackAPI {
       return trackRes;
     }
 
+    // unverified track
     response = await Http.request({
       method: 'POST',
       path: 'track',
@@ -204,6 +212,8 @@ class TrackAPI {
       location,
     } as RadarTrackResponse;
 
+    Storage.setItem(Storage.ID, user?._id);
+    
     if (options.debug) {
       trackRes.response = response;
     }
diff --git a/src/storage.ts b/src/storage.ts
index 1555162a..27798a37 100644
--- a/src/storage.ts
+++ b/src/storage.ts
@@ -3,6 +3,9 @@ import Logger from './logger';
 class Storage {
 
   // local storage key definitions for identifying track users
+  public static get ID() {
+    return 'radar-id';
+  }
   public static get USER_ID() {
     return 'radar-userId';
   }
@@ -41,6 +44,14 @@ class Storage {
     if (!storage) {
       return;
     }
+    // clear id if user_id doesn't match previous
+    if (key == this.USER_ID) {
+      const previousUserId = this.getItem(this.USER_ID);
+      if (previousUserId !== value) {
+        storage.removeItem(this.ID);
+        console.log("User id mismatch, removing ID");
+      }
+    }
     if (value === undefined || value === null) {
       return;
     }