Although it's not a new rumor, supposedly there is new evidence which might just confirm that the Samsung Galaxy S5 will come with a fingerprint sensor. Previous rumors suggested that this sensor would be built into Samsung's display for the device, but this new intel refutes that assertion. Supposedly, this new rumor also indicates that Samsung will keep the physical home button, and that this will be where their fingerprint sensor will be embedded.
This new fingerprint sensor is said to use a swipe method to activate. Additionally, this fingerprint sensor has some unusual characteristics. Supposedly it is very sensitive, and will cause errors if you try to use it with too much moisture on your fingertips. Furthermore, Samsung has implemented the fingerprint sensor throughout the OS, such that you can actually have 8 different fingerprint IDs, and each of them can do various tasks from unlocking the device to opening apps. Additionally, Samsung has created a Private folder which can hold any private apps/content you choose to put inside. It will only be able to be opened with the correct fingerprint ID tag (or equivalent security feature).
Supposedly, Samsung's whole intent is to more fully utilize the fingerprint sensor in ways that the other manufacturers have failed to do. Finally, as an interesting add-on "feature," the Galaxy S5 will be able to display a real-time image of your fingerprint on the screen when you swipe your finger.
The folks at SamMobile are claiming their report is confirmation that the device will come with this feature, but we still prefer to categorize it as a rumor for now.