Disclosed is a device for secured access to applications of a chip card, bringing into operation instructions that provide information, at each point in time, on the rights, especially in terms of access to the chip card, of a software component or a hardware action performed in the chip card. In the case of each new software component and at each new hardware action, a register R of the microprocessor of the chip card stores a specific code that makes it possible to check the authorized nature of the operations of access to the memory of the chip card that are performed by the new software component or hardware action.