The latest rumour comes courtesy of iTechAddict's 'Samsung insider' who claims that the Galaxy S5's screen itself will act as a fingerprint scanner.
That's right. Unlike the iPhone 5s' Touch ID Home button or the HTC One Max's rear scanner, the Galaxy S5 will be able to scan your fingerprints with the screen itself, allowing you to unlock the device and potentially authorise transactions.
While it sounds like wistful future gazing, we've come across a paper from the University of Houston which proves that the technology is definitely feasible. The study discusses advances in transparent fingerprint sensors which can be integrated into TFT touchscreens.
The latest report is a world away from the last report we heard, mind you, which suggested that Samsung's scanning tech isn't as mature as the iPhone 5s'.
But if the new rumours prove to be true then the Galaxy S5, with its 2,560 x 1,440 QHD screen, 3GB of RAM and Exynos 6/Snapdragon 805 innards will be the most advanced smartphone in the world when it's revealed at Mobile World Congress in Barcelona.