At MWC 2019, Samsung unveiled its flagship S10 smartphone which came with significant design changes, especially the adoption of Qualcomm's ultrasonic in-screen fingerprint technology for the first time. This report outlines the mainstream fingerprint recognition technology and the fingerprint sensor market, and examines the development of major players, including Goodix, Egis, Qualcomm, Synaptics, and Fingerprint Cards; looks into the key trends in fingerprint recognition technology.