Fingerprint sensor firm Goodix has revealed that its in-glass sensor features on vivo's brand new bezel-free X21 flagship smartphone.In a statement, the firm said that in the last five years, Goodix has pooled together its global R&D resources to develop the technology.”In the process, numerous technical difficulties were resolved in order to provide superb user experiences. Including optimized optical stack design to elevate anti-interference against ambient lights, allowing smooth and rapid unlock under the sunlight; enhanced algorithm to lower the FRR (false-rejection-rate) of dry fingers as well as in extreme low temperature environment”.”Signal penetration and water resistance have also surpassed capacitive fingerprint solutions”.