The prototype of the Vivo's under-display fingerprint technology includes Synaptics in-display fingerprint reader.
Synaptics' original claim of mass production with a "top 5" smartphone OEM may seem questionable to some of you, but Vivo was indeed ranked fifth based on global market share according to IDC's Q1 2017 report, and dropped down to sixth in Q2 2017. And this time, without thick bezels above and below the screen.
Nonetheless, it's definitely exciting to finally see a smartphone with an in-screen fingerprint sensor become a reality. That means that you've had to move your fingerprint sensor from the front, where many like it the best, to the back, or, as is the iPhone X's case, remove it completely.
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You can register your fingerprint the same way you do on a normal smartphone with a regular fingerprint sensor.
The actual phone that we demoed with vivo is still not finalized. "Today's showcase of a ready-to-produce in-display fingerprint scanning smartphone featuring an optical fingerprint sensor is a big leap forward in bringing consumers this long-awaited, futuristic mobile experience". For the most part, it works just like a conventional fingerprint sensor, only you don't actually see the sensor - it's really quite impressive.
There is no home button breaking up your screen space, and you no longer need to fumble for a reader on the phone's back. As soon as you press the icon on the screen, it has a Gestures function, which activates the Synaptics optical sensor with a cool tap animation to let you know that you have clicked and now can unlock the phone. The chip-maker went on to explain that the sensors were developed as an "integrated solution" that would work in tandem with the chip-maker's expansive line of Snapdragon CPUs for mobile devices. I would have liked to be able to place my finger anywhere on the screen and have it be recognized, but unfortunately, the in-display sensor is only located at the center-bottom. This is an awkward location of the fingerprint sensor, leading to many users smudging the rear cameras with their fingers because they mistake it for the fingerprint sensor. Patric further speculates that Clear ID is considerably less expensive when compared to Face ID, and that puts Synaptics at a definite advantage when compared with alternatives.