Foldables are increasingly likely to be the future of mobile devices; then again, even the highest-end of them come with some compromises right now, one of which is often a lack of in-display fingerprint readers. However, Vivo's rumored first-gen X Fold is now slated to have not just one but two of them.
https://www.notebookcheck.net/The-Vivo-X-Fold-will-launch-with-dual-ultrasonic-fingerprint-sensors.608363.0.html