A security system having an inner door handle of a door for a vehicle. The door is brought into a locked and unlocked state with a locking system. The security system includes an actuator triggering an actuation process for opening a lock of the locking system when activated, and an identification element detecting an approach around a zone of the actuator or a contact with the actuator when the identification has been positive. The locking system has an unblocked mode wherein the locking system is in the unlocked state and the actuator is effectively connected to the lock. A control unit is in data communication with the locking system and identification element. The control unit puts the locking system in the unblocked mode once the identification has been positive and the vehicle outputs an unblocking signal such that the actuation process is triggered by activating the actuator.