We are facing an issue with our product's security feature, which involves using the 'fbclid' code in the URL. On iOS 17+ Safari, especially in incognito mode, Apple has disabled link trackers, causing redirection without the code, leading to a failure in accessing our product.
To reproduce the problem, you can use the following URL in incognito mode: "https://example.com/?fbclid=123". You'll notice that the URL changes to "https://example.com/" due to Apple's tracking and fingerprinting protection.
We are looking for a reliable method to detect whether the user is browsing in incognito mode and, based on this detection, provide an alternative URL.
We have already tried using a hidden iframe and checking the redirection from the iframe, but it didn't yield the desired result.
Any suggestions or solutions on how to detect incognito mode in iOS 17+ Safari would be greatly appreciated. Thanks in advance!
I've been maintaining a repo on GitHub to detect incognito mode using JavaScript for several years now. It works on all modern Safari versions up to the current 17.3.
https://github.com/Joe12387/detectIncognito