The tech won't be exactly the same in each model, however. While the premium S10 will have a more accurate ultrasonic version, the standard S10 will feature an optical version (as seen in the Vivo Nex) to keep down costs. Three times cheaper than the ultrasonic tech, it's not as accurate when your fingers are wet or dirty.
Samsung has a lot more in store for the Galaxy S10, too, which may arrive in 5.8-, 6.2- and 6.44in sizes. There's expected to be triple rear cameras, Face ID-style 3D sensing, a bezel-less display - potentially up to 4K in resolution - and a processor bump that boosts performance. The Galaxy S10 Plus could also get five cameras.