Ask anyone to tell you where a smartphone’s fingerprint reader should be and, though the answers will vary, you’ll never be told “off center, right next to the camera lens on the back.” But lo and behold, that’s exactly where Samsung plopped its fingerprint scanner on the new (and otherwise delightful) Galaxy S8. It’s a perplexing decision if we consider it as a deliberate design choice, but reports ahead of the S8’s launch, which now seem validated by the device itself, suggest that it was a last-minute alteration enforced by the slower-than-desired development of more ambitious technology.
Source: The Galaxy S8’s misplaced fingerprint scanner was probably a last-minute change – The Verge