| 摘要 |
A financial transaction card (20) is transparent or translucent to human viewing yet detectable by automated card processing equipment. The card includes a substantially planar material sheet (22) having upper (24) and lower (26) surfaces bounded by a continuous peripheral edge (28). The material sheet (22) has one or more areas (30) that are at least minimally transparent or translucent to human viewing. A filter (32) associated with at least one of the areas provides sufficient opacity to light used by card sensors in the automated card processing equipment to render the card (20) detectable.
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