Biometrics represents one of Synaptics largest growth opportunities. The company posted a 43 percent increase in its fiscal fourth-quarter revenue thanks in part to the better-than-expected performance of its biometric business. Bergman sees that business eventually taking off because of three main benefits: convenience in unlocking phones, security and a method of confirming a transaction. Bergman, however, admits that fingerprint readers could be better, and he said customers had shown some frustration with them. While his company’s study shows that it’s quicker to unlock a phone with a finger tap than a typed-in a pass-code, there’s less tolerance for errors when it comes to fingerprint sensors. Synaptics is working on improving the readers, initially by reducing the split-second delay between pressing the sensor and the phone’s response. “It needs to be like the on/off button,” he said. “We need to make it faster, and today, it’s not the case.” View gallery The iPhone 5S features a fingerprint reader using technology acquired by Apple.