Steganography - Ultraviolet
Steganography - Ultraviolet
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Dyes and inks which
fluoresce under ultraviolet (black) light have always been used as security
markings to guarantee the authenticity of documents. The following images
are only suggestive of the range of applications which are in use today. Questions? Comments? Please email me... nick.gessler(at)duke.edu |
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Currency
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 US $5, 10 & 20 |
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 5 Euro |
 10 Euro |
 20 Euro |
 20 Euro (detail) |
 Sweden 100 Kronor |
 Sweden 100 Kronor |
 Sweden 500 Kronor |
 Sweden 500 Kronor |
 Bank of England 5 Pounds |
 Bank of England 10 Pounds |
 Bank of England 20 Pounds |
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Credit
Cards
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 American Express Personal |
 American Express Corporate |
 Discover |
 MasterCard |
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Drivers'
Licenses
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 California Driver's License |
 California Driver's License (closeup) |
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Passports
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 US Blank Pages |
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 Chinese Visa |
 Russian Visa |