Abstract: The combination system of variable passwords has for purpose to become inviolable the access passwords to systems, when making possible the generation of variable passwords indefinitely, increasing the difficulty of criminal access significantly to the encryption codes of the operating systems managers o commercial or not commercial transactions that demand supply of passwords, offering extremely safety to those systems. The said system is constituted basically by a card (1), electronic or not, containing a graphic table (2) composed by characters or symbols disposed in groups of holes (4) or other types of leaks for selective reading of groups o characters or constant symbols of the printed table in the card, configuring, like this, different passwords (5) (6) for each operation to be executed through this combination system of variable passwords.