Font Ecofont - the birth of the mind of a man named Colin Willems (Colin Willems), working in the Dutch company SPRANQ .
The main difference between the Ecofont font and the rest is the small uncolored circles placed inside each letter with a single goal: to reduce the total amount of toner / ink used by the printer when printing documents. Let's face it - the implementation is simple to the point of impossibility, but perhaps for this reason a similar font has appeared just now.
How much character can be removed, provided that the readability of the text is preserved? After many tests with different forms, Spranq concluded that it was best to use small circles, and after several tests it was found that as a result the printer uses 20% less paint - an excellent crisis management solution for the corporate sector. ')
And although the creators of the font and do not aim to popularize it, surely those who liked the idea will turn their attention to it. For printing large volumes of products (as in publishing), savings of this kind will surely find use.
A positive moment from the font description: "The Ecofont is distributed under the GPL ..."