Currency Features for Visually Impaired People (1995) / Chapter Skim
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Appendix E: Features Not Subject to Full Evaluation
Appendix E: Features Not Subject to Full Evaluation
Pages 113-116
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From page 113... ...
Although currency paper has a distinctive crackle, it was not considered feasible to provide a range of sound options. The committee considered that the range of basis weight values required to provide an acceptable discrimination to the untrained public over six values would range from tissue paper to board.
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From page 114... ...
It would also require largesized windows to assist visually impaired people. This would not be possible to achieve on the normal height of notes and still give adequate durability.
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From page 115... ...
Patches applied after banknote manufacture, indicating denomination by location or texture Thin silicon chip Existing banknotes vary in porosity during the course of their lifetime. The possibility of controlling this parameter within boundaries that were even machine detectable was considered unrealistic.
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