In 1999, Philippe Camoin revealed the existence of laws in the Marseilles Tarot that he and Alexandre Jodorowsky reconstructed. It is Philippe Camoin who first called them "laws".

These laws, just like mathematical laws, make it possible to understand the manner in which the Symbols and Secret Codes of the Tarot have been arranged. Indeed, they are not arranged by chance, but in accord with an extremely complex and ordered struture. There are thousands of codes and they all answer to the logic of the Camoin Laws of Tarot.

As this set of laws and its structure were unknown before his discovery, the laws were named the "Camoin Laws".

There are several laws of the Tarot. Some of the notable ones:
 the Law of Repetition
 the Law of Two
 the Law of Three
 the Law of Four or the 3 + 1
 the Law of the Extremities
 the Law of Resemblance
 the Law of the Regard
 the Law of the Exception
 the Law of Inversion
 the Law of Proximity

These laws do not simply occur only once in the structure of the Marseilles Tarot. Quite the contrary, they occur repetitively, which is why they are called "laws" by Philippe Camoin.