If anyone who has used the Galaxy S8 was asked to point out a single flaw in the S8's design, it would be the fingerprint scanner's placement. Of course the Bixby button could be up for argument as well, but it will more likely lose to that awkwardly placed sensor by far. If you have been following us, then you probably already know that the design choice in this regard wasn't really a "choice" for Samsung. After putting in the necessary money into developing a fingerprint scanning tech that could be placed below the glass, Samsung found that it wouldn't be ready before the beginning of the Galaxy S8's mass production process. They literally had no space left at this point to implement the fingerprint scanner, except where you see it right now.
Sadly enough, it seems that the Note 8 will not be able to sport the tech either as Samsung and even Apple is facing some serious issues with implementing the technology into their respective upcoming flagship smartphones. In the words of a Samsung representative (according to the report), "We made every effort to install a display-integrated fingerprint sensor on Galaxy Note 8, but we decided not to install it on this strategic phone due to various technical limitations such as security." Samsung will continue to work with CrucialTec and others in the field to develop and integrate the technology, but it doesn't seem like something which could happen before the Galaxy Note 8 is released.