Where does this come from, and can I check it?

Microscopic banknote text turns blurry when scanned on standard office copiers. The figure is taken from USPS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Everyday Life shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Banknote microprinting deters low-resolution digital photocopiers

Microscopic banknote text turns blurry when scanned on standard office copiers

Modern banknotes incorporate microprinting features containing tiny lettering just fractions of a millimetre high. While easily readable under a magnifying glass, desktop digital photocopiers and commercial desktop scanners lack the optical resolution to capture microtext, producing blurred lines on counterfeit copies.

Where this comes from

USPS

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: currency, money, security

Banknote microprinting deters low-resolution digital photocopiers: the short answers

Where does this come from, and can I check it?: Microscopic banknote text turns blurry when scanned on standard office copiers. The figure is taken from USPS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.