Synaptics (NASDAQ: SYNA) had a forgettable 2017 despite a promising start to the year. There were rumors that the specialist in human interface solutions would land a spot in Apple's (NASDAQ: AAPL) new iPhones, allowing Cupertino to make devices with edge-to-edge screens thanks to its in-display fingerprint sensing technology.Then, there were reports that Synaptics was collaborating with Samsung to build a fingerprint scanner directly into the screen of the Galaxy S8.