Websites can not do that anymore.
In today's Chrome Browser version, you have the option to check if an anonymous visitor mode is turned on.
However, starting with Chrome 76, the web pages will not be able to check if the file system API is available. When a site loses this capability, it means that it will be impossible to determine whether a user is involved or not anonymous.
"The FileSystem API behavior has been modified to eliminate the detection method in anonymous ways", Writes Google in a post on a blog.
Limited number of free items
Changing can lead to problems on many sites, especially online newspapers that restrict how many articles you can read for free.
Read also: Some of them will not like this Chrome update
Since after reading a number of free articles in these newspapers (and a few others), you will be notified to subscribe to unlimited access. Nor did it help to use the anonymous way because the websites were discovered.
The challenge for many newspapers
When that opportunity disappears, it means that you can actually overcome constraints and access a number of articles.
How will the publications solve this new challenge, and if possible, remains to be seen.
Chrome 76 will be launched in late July but is already available for beta testers.