Samsung Galaxy S10 has two suppliers of fingerprints in the display:

Samsung Galaxy S10 has two in-display fingerprint sensor suppliers: GIS and O-film

 highlights 

have signed a contract with Qualcomm to create a new GIS sensor with high production rates Both component suppliers currently offer iPad touch modules.

The Samsung Galaxy S10 features General Interface Solution (GIS) based in Taiwan and China's O-Film Tech as two component suppliers for its ultrasonic fingerprint sensor in the display. This confirms a pre-report claiming that two Galaxy S 10 variants begin with the fingerprint scanning technology in the display

Citing people familiar with development, Digitimes said that Samsung is placed on the board's in-display fingerprint sensor on the GIS and O-Film on-board source. The two companies are said to have partnered with Qualcomm to develop new sensor technologies. GIS shall be considered

GIS and O-film Samsung are believed to make some effort to persuade Samsung to receive many orders if the ultrasonic fingerprint technology in the display is extended to the next Galaxy Note model. South Korea 's Giant 2019 could also use similar technology on Galaxy A-Series devices