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Why do passports only come in four colours?

Passports around the world are only made in four colours: black, blue, red and green. There are no official rules or regulations governing what colours...

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Retinal recognition: pros and cons

In Part 1 of this series, Ravi Das looked at an overview into and the process of retinal recognition, which he describes as the...

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Cape Verde releases a new 200 escudo banknote made of cotton

The Bank of Cabo Verde (BCV) has released the new 200 escudo banknote last Friday, 8 January 2021. “Given the centenary of the birth of Cape...

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