There are many updates and customization are done to the safari browser in IOS 15
There is something new coming in the iOS 16 update for Safari Browser
To install this update of Safari you have to download or install the iOS 16 public beta version on your iPhone
Now you can share the entire browser tab with other people
It is the key that is used as an alternative to your password, apple gives this passkey preview at WWDC in JUNE.
Now you do not have to remember a long password only you have only remembered this key
Safari issue you a digital key as a verified face ID of your iPhone