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Security by Design: False Split Fountains

Joel Zlotnick, Jordan Brough and Troy Eberhardt The first three papers in this series described how counterfeiters reverse engineer security document artwork and proposed security...

Transparent ink

Transparent ink that becomes visible/invisible, depending on the angle of view and/or light.

UV Ink

Ink that is invisible to the naked eye and that becomes visible when irradiated with Ultra Violet (UV) light. This can consist of text, a...

Spark

An optically variable ink that changes colour and brightness, giving the impression of dynamic movement.

Thermochomatic ink

Ink that changes colour in response to a source of heat or cold. Once the heat source has been removed, the colour change (shift)...

Phosphor ink

Ink that emits light following exposure to a light source (ambient or UV light).

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UAE Marks 50-Year Anniversary with Commemorative Banknote

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The Central Bank of the United Arab Emirates is commemorating the country’s 50-year anniversary with a new 50-Dirham banknote. The note pays tribute to...

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Face verification robustness & camera-subject distance

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After the international standardisation working group responsible for machine-readable travel documents (ISO/IEC JTC1/SC17/WG3) raised the question whether magnification distortion of facial images affected the...

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