The growing popularity of using fingerprints to unlock mobile phones and other devices is expected to drive growth at Synaptics Inc , which makes the chips enabling the technology popularized by Apple Inc’s iPhone 5S. Synaptics’ chips for fingerprint ID and touchscreens are used in Samsung Electronics Co Ltd’s Galaxy S5, and strong sales of the smartphone will help Synaptics post its strongest annual revenue growth since 2007. Synaptics could boast of a market share of as much as 80 percent in fingerprint recognition technology for the next few quarters as the S5 will be the dominant smartphone being shipped with the technology, Feltl & Co analyst Jeffrey Schreiner said.