Why it might seem stupid to some to ask such a question it is 100% sensible to ask. There are a couple of events that may want to make you use such a method: hiding the url. Look at your mobile apps, do they show the urls? NO.

It looks elegant and customised to hide your url tab in some cases. For instance you have a web app for quiz and want them not to know what url they are hitting. Just enter your registration number or exam number and start the exam. This may make some sort of sense.

However, the way it is is that it's quite not easy to achieve that out rightly but there is always a way out of everything. What are programmers for? I have seen a couple of exams taken using customised browsers that do not reveal the search bar/url bar, just the content. It is also a method I am currently researching; that is even why I am able to see this. Any simple useful tip will serve.

Thanks.