While the Galaxy Z fold 3 didn't arrive with an under-display fingerprint scanner, next year's Galaxy Z fold4 might arrive with a rather intriguing fingerprint sensor.
According to a patent application spotted by let's go Digital, the upcoming Z fold 4 might use a double-sided fingerprint sensor that ell sits between the cover screen and the main screen. This has never been done on a foldable phone so far and unlocks a rather interesting use case.
The rumor dual-sided sensor will allow the user to unlock the device by inputting their digit into either the external it the internal display. Due to the positioning of the sensors, they will essentially be communicating with the same PCB on the main board of the phone, which will help save some precious internal space.
The same mobile points out that Samsung could go for any combination of ultrasonic and optical sensors but neither the patent application nor any other rumor corporate that notion. With this new implementation, users will be able to authorize payments, unlock the device, and authenticate locked apps no matter which screen they're currently on.
While the Galaxy Z fold3 snappy capacity fingerprint scanner is as good as it gets and works great no matter which displays you use. The Z fold3 certainly lacks the novelty appeal of an under-display fingerprint scanner provided that its successor indeed arrives with such a biometric sensor. Samsung will have all the right in the world to beat itself in the chest and claim the first spot as no other folder phone so far has arrived with a display fingerprint scanner. Even less so is a double-sided sensor.
