| 摘要 |
A fingerprinting device including a thin, flat transparent medium (10) with an outer surface engageable by a fingertip and an inner surface supporting a two-dimensional array of light-sensitive elements with linear gaps therebetween, as well as a substrate (14) with an inner surface supporting light sources for directing a light beam substantially orthogonal to said outer surface through the linear gaps in the medium. The light-sensitive elements are shielded from the light from the light sources so that they provide an output only in response to the light backscattered onto the outer surface of the medium.
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