A
system for and method of illuminating a contact (or touch) device such as a
fingerprint sensor are disclosed. In an exemplary
system, a touch
sensor system has a surface or contact area and comprises a substantially transparent molding positioned over the contact area and a dynamic illuminator positioned to show through the molding. The dynamic illuminator is for indicating a status of the touch
sensor system, such as power on, standby, error, low power, an input mode for receiving
user input, or a selected operating mode. The touch
sensor system includes any one of a
fingerprint sensor, a miniature
joystick, a touch-sensitive navigation disc, a touch-sensing navigation pad, an N-way pressure-sensitive directional control, to name a few touch sensor devices. In one embodiment, when the touch sensor comprises a
fingerprint sensor, the operating mode is for emulating an
input device such as a
scroll wheel, a
push button, a
steering wheel, a joy stick, a pressure button, and a mouse. The operating mode also includes an
authentication mode for authenticating an identity of a user. Preferably, the dynamic illuminator includes light sources and multiple light channels,
colored or not, that are configured to be illuminated in multiple configurations, where each configuration corresponds to a status of the touch sensor
system.