Global shipments of fingerprint-on-display (FoD) grew by near eight times in 2019 and will grow even larger in 2020, according to market research firm Omdia.
A total of 228.3 million FoD sensors were shipped in 2019, an increase by 674 percent from the 29.5 million moved in 2018.
This will be further expanded to 400 million units in 2020, Omdia said, thanks to FoD sensors having reached the sweet spot for pricing.
FoD sensors are currently widely used in smartphones, allowing consumers to unlock their phones by placing their finger tips on the display screen.
By being on the display and therefore taking up less space, these sensors have allowed for vendors to design their smartphones more freely.
Over 70 smartphone models used FoD sensors last year, the research firm said.
Some FOD sensors use light to reflect fingerprints __ called optical imaging CMOS image sensor (CIS) __ while other use sounds, or ultrasonic echoing.
Optical imaging CIS accounted for 79% of the units shipped in 2019 and will further grow to 88% of all the FoD units moved in 2020.
Meanwhile, ultrasonic sensors accounted for 21% of the total in 2019 but this will drop to 12% in 2020.
Optical imaging CIS are generally more cheaper than their ultrasonic counterparts and more and more vendors are preferring them more. Chinese smartphone makers such as Huawei use optical ones for the majority of their models, while Samsung use optical sensors for mid-tier phones such as the A series and ultrasonic ones for high-end models such as the S series and Note series.
US firm Goodix was largest vendor of FoD sensors with over 50% market share last year.