Human interface solutions firm Synaptics has unveiled long-awaited in-glass fingerprint sensors, while confirming that a smartphone manufacturer has already ordered some.The firm announced mass production with a top five OEM of its new Clear ID FS9500 family of optical in-display fingerprint sensors.Designed for smartphones with infinity displays, Synaptics' Clear ID in-display fingerprint sensors activate in the display only when needed.The firm said Clear ID is faster than alternative biometrics such as 3D facial, highly-secure with SentryPoint technology, and very convenient with one-touch/one-step biometric authentication directly in the touchscreen display area of smartphones.”Consumers prefer fingerprint authentication on the front of the phone, and with the industry quickly shifting to bezel-free OLED infinity displays, the natural placement of the fingerprint sensor is in the display itself,” said Kevin Barber, senior vice president and general manager, Mobile Division, Synaptics. “Synaptics' Clear ID fingerprint sensors are faster, more convenient, and more secure than alternative biometrics, and this optical technology represents a major innovation shift and opportunity for the smartphone market.”