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The Real World is Wet Wet conditions are notoriously difficult for both semiconductor and conventional optical fingerprint sensors to handle. Easy Clocking Time Clocks work in extreme conditions, including rain. Conventional optical technologies are often unable to produce images in wet conditions because excess moisture obscures fingerprint ridges, resulting in images of puddles, not fingerprints.

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Easy Clocking fingerprint sensors capture high-quality images in this situation because the direct imaging process does not depend on a clean finger/sensor interface. The fingerprint images shown here illustrate this point: A finger was submerged in a pool of water and placed on two sensors. The conventional optical sensor was unable to capture a good image because the water interfered with the finger/sensor interface. The Easy Clocking sensor was able to “see” the fingerprint and produce a high-quality image in this very wet real world condition.