Smartphones with fingerprint readers embedded into the display are no longer a fictional endeavor, as Vivo has already shown off one of its own smartphones with the technology in place.
Galaxy Note 9
The lack of an under-display fingerprint scanner on the Galaxy S9 disappointed many, especially after Vivo partnered with Qualcomm to show off a phone with an under-display fingerprint scanner at CES 2018. Nonetheless, reports claimed that Samsung would be debuting the technology on the Galaxy Note 9 later in the year.
KGI: Samsung Galaxy Note 9 to Ship with Under-Display Fingerprint Scanner; Galaxy S9 to Feature Improved Iris Scanner
The fingerprint scanner on the Galaxy S8 and Galaxy S8+ has been heavily criticised for its poor location and inaccuracy. It was believed that Samsung would ship the Galaxy Note 8 with a fingerprint scanner embedded into the display but due to technological reasons, the company has had to push that for the Galaxy S9 next year.