| 摘要 |
<p>A security document (10) having first and second areas (14, 18) on one side coated or treated with complementary compositions of the types that will leave a mark (36, 38, 40, 42) when pressed together, with some areas (20, 22, 24) of one composition desensitized, so that the authenticity of the document (10) may be tested by folding the document (10) to place the areas (14, 18) together and then exerting pressure thereon.</p> |
