On screen fingerprint sensor why ? does it make a change?

Hi friends today we will talk about on screen fingerprint scanner Vivo has recently launched Vivo X 21

smartphone which has A on screen fingerprint scanner .
And this started a lots of question in tech industry that why or what is the need of putting a fingerprint sensor into a glass or a screen does it have any future use or change something that is not yet changed believe me that a fingerprint sensor only makes your applications or your mobile secure but not secure as a password today also the password is the first priority in security systems all over the world it is a phone or it's a bank locker anywhere you will find a password. and then the other Technologies such as fingerprint sensor eye sensor retina sensor and whole lot of sensors .
but kudos to  that vivo has done a great job but they didn't show that what Indisplay fingerprint does We can say it's like a invention which no one had think before they have done a great job in in the tech industry but do it really required now or do it really required before .the question is why Indisplay fingerprint scanner?

  you can ask to anyone or you can see a lot of web pages all over but you can't find an exact answer for what is the real use of in display fingerprint sensor .Now I am going to give the answer it is just the race between the Tech community that who will launch the features first just like apple has given the noch because of some  because of the censor s  which they don't find to place the place where to find so they have given the sensors atleast they have a valid reason but simply all the Mobile and Gadgets industry we can see Oppo Vivo mi , all of them everyone they are blindly  copying because of noch  has created a hype among people and has a good selling point .

I am trying to say it's a race among all companies which converted in  making inventions .if we go practically the Indisplay sensor isnt any different compare to regular fingerprint sensor it's just a piece invention which can be applied as an Extra feature to show off  and this is  Business  I think Vivo has done an excellent job at the field after all in every race there is a winner and in this race of tech the winner will be we the consumer .