> allow you to save your login if you come back later. Again, is there any browser nowadays that doesn't save the login? I don't know any, personally but I do

> allow you to save your login if you come back later. Again, is there any browser nowadays that doesn't save the login? I don't know any, personally but I do not know all of them. And if they are, how much market share they have? (If I myself build tomorrow a browser without the functionality, that can't be an argument that the legislation is wrong...) > How would it work differently for sites with a username and password? Generally for sites where you use a username, the site will load from the server several information to display (ex: your full name to write "Hello Mister X", etc.). In the same request you can have the user preferences (theme/language/etc.), and the local javascript uses them to do whatever it needs to do. Even with a cookie, there needs to be some javascript to do some actions, so no difference. Or you could just redirect via a URL that has the user preferences once he logged in (ex: after site knows you are the correct user it will redirect you to https://mysite.com?lang=en&theme=dark https://mysite.com?lang=en&theme=dark) There are many technical solutions, not sure why everybody is so crazy about cookie (oh, maybe they think of the food! Yummy)