If Synaptics works it out in time, the fingerprint reader could be under the screen on the Note 8.
This is why I'm waiting for to upgrade my S5. If the Note 8 has this (awesome and super convenient) under the screen scanner, I'll upgrade. If not, I'll wait for the S9.
How a phone unlocks is EXTREMELY IMPORTANT to me. I unlock mine dozens of times a day. And contrary to all the garbage that is spouted on regular reviews of the Galaxy S5, its fingerprint reader is VERY reliable. Out of a 100 attempts, I would be unlucky to miss 2 times, and even then because it tells me my fingers are wet.
Playing around with my wife's iPhone 7 is a bit more convenient. Not a reflection on Apple, just a comment on a couple of years of progress of technology. Instead of press the home button and swipe like I do now, just press on the scanner and done.
I don't want to go from a fingerprint scanner that works almost faultlessy in a location that is very convenient to one that is inconvenient because of its location. That's going backwards.
Hence my waiting for the first Galaxy phone to have the exciting under the glass scanner.