Abstract: The present disclosure relates to finger vein imaging devices and finger vein authentication systems. In certain embodiments, the finger vein authentication system includes at least one finger vein imaging device and a finger vein authentication controller. The finger vein imaging device includes one or more finger vein image sensors for capturing infrared image of finger vein pattern of a user's finger, an in-position touch sensor, and one or more infrared light sources positioned at opposite side of the finger vein image sensors. When the user's finger is placed on a transparent finger resting surface and touches the in-position touch sensor, the finger vein imaging device is triggered to turn on the infrared light sources and to capture infrared image of finger vein patterns of the user's finger, and the finger vein authentication controller authenticate the user using the captured infrared images of finger vein patterns of the user's finger.