To minimize counterfeiting, banks have developed various security features on banknotes.

Watermark, security thread, holograms are easily recognizable, but there are also micro-letters.

These micro-letters are invisible to the naked eye and present us with simple lines or patterns, they are nevertheless of strings forming words or even sentences.

This type of protection requires a magnifying glass magnification X5 least on some tickets to be checked. For example on German banknotes, it is necessary to use a X10 magnification.

More micro prints are small they are more difficult to print

Here is an example of what we can read on the notes of the last range of french's Bank note

There was a star, planet, my planet, Earth, a little prince to be comforted! I took him in arms. - Antoine de Saint-Exupery
To read on the horizontal lines in the upper left corner
The drawing and color are not separate. Gradually, as we paint, draw, more color harmonizes, the more the drawing is accurate. With an apple I will astonish Paris. - Paul Cezanne
To read on the horizontal lines in the upper left corner
We can say without any exaggeration that until the beginning of this century, the branch of physics on the air resistance does not present confusion and uncertainty. The French flag is the only one who has a staff of three hundred meters. - Gustave Eiffel
To read on the horizontal lines in the upper left corner
I am among those who believe with Nobel that mankind will derive more good than harm new discoveries. - Pierre Curie
To read on the horizontal lines in the upper left corner
Voici un exemple de ce que l'on peut lire sur un billet du Tchad
Cameroon Center Africa Congo Gabon Guinea Chad
To read about the line forming the border around the bank note
More and more countries are using this method, there is the face value of the bank note, the country's name or the name of the bank note. To your magnifying glass and good discoveries!!!