diff --git a/lib/web.js b/lib/web.js
index b75a6ba7..4b703894 100644
--- a/lib/web.js
+++ b/lib/web.js
@@ -46,3 +46,15 @@ export const hook = (_this, method, callback) => {
     return orig.apply(_this, args);
   };
 };
+
+export const doNotTrack = () => {
+  if (window.doNotTrack || navigator.doNotTrack || navigator.msDoNotTrack || 'msTrackingProtectionEnabled' in window.external) {
+    if (window.doNotTrack == "1" || navigator.doNotTrack == "yes" || navigator.doNotTrack == "1" || navigator.msDoNotTrack == "1" || window.external.msTrackingProtectionEnabled()) {
+      return true
+    } else {
+      return false
+    }
+  } else {
+    return false
+  }
+}
diff --git a/tracker/index.js b/tracker/index.js
index 48dcc487..708a9b37 100644
--- a/tracker/index.js
+++ b/tracker/index.js
@@ -1,6 +1,6 @@
 import 'promise-polyfill/src/polyfill';
 import 'unfetch/polyfill';
-import { post, hook } from '../lib/web';
+import { post, hook, doNotTrack } from '../lib/web';
 
 (window => {
   const {
@@ -13,7 +13,7 @@ import { post, hook } from '../lib/web';
 
   const script = document.querySelector('script[data-website-id]');
 
-  if (!script || navigator.doNotTrack === "1") return;
+  if (!script || doNotTrack()) return;
 
   const website = script.getAttribute('data-website-id');
   const hostUrl = new URL(script.src).origin;