Abstract: A hand-held personal identification device is provided. The hand-held personal identification device includes a sensor system for gathering biometric information from individuals, a profiler system for developing profiles of individuals based on biometric information gathered from the sensor system, and a personal data assistant or similar computing device with a screen for providing a user interface and overall system control. A sensor system interface couples the sensor system to the computer module.

Abstract: A hand-held personal identification analysis device is provided. The hand-held personal identification analysis device includes a scanning system for gathering biometric information from individuals, a profiler system for developing profiles of individuals based on biometric information gathered from the scanning system, and a personal data assistant or similar computing device with a screen for providing a user interface and overall system control A scanning system interface couples the scanning system to said computer module.

Abstract: A surface pattern imaging device applicable to fingerprint and other surface imaging applications operates with an illumination source. In an embodiment, the illumination source is a narrow band green light, and an optical imaging path of the reader includes a green band pass filter and an infrared (IR) cutoff filter between the surface of interest and an image sensor. The filters prevent ambient light outside the green range from reaching the image sensor. In an exemplary embodiment useful in fingerprint imaging, ambient light wavelengths in the green range are absorbed and blocked naturally by the finger, and therefore cannot pass through the finger into the imaging path. Ambient light in other ranges, particularly including the red and infrared ranges which may pass through the finger, is attenuated by the band pass and IR cutoff filters.