Now, Synaptics has revealed its own fingerprint sensor that can reside under a display.
Samsung will reportedly bring several upgrades to the iris scanner on its next Galaxy S phone, presumably called the Galaxy S9.
We don't now have any information on how many megapixels will be for those cameras. According to Synaptics, the sensor will even function properly with wet, dry, or even cold fingers.
The Clear ID fingerprint sensors are designed for smartphones with bezel-less infinity displays that incorporate a button-less experience, Synaptics said.
If Synaptics delivers on its promise what this means is that such a fingerprint sensor, which can be embedded, under the screen will result in major rethinking of smartphone designs in 2018. Right now the Galaxy S8 and Galaxy Note 8 are the only Samsung phones with iris scanning - excluding the recalled Note 7.
Synaptics claims Clear ID is two-times faster than alternative biometrics like 3D facial recognition found on Apple's iPhone X. Of course, we'll have to wait for this mystery smartphone launch to find out more. It will come with top-end hardware, including the recently-announced Snapdragon 845, infinity display - incidentally, the same term is used by Synaptics in its statement - and a metal and glass body.
To combat this potential vulnerability, Samsung has made a decision to incorporate a bigger and possibly better 3MP iris scanner to ensure that a proper iris scan can be had even if the user is wearing glasses or is standing in low light or dim light conditions. At the same time, Vivo had demonstrated the feasibility of the technology via a prototype phone that had a fingerprint sensor under the screen using Qualcomm technology.