A mobile device for transcranial auto-stimulation and a method for controlling and regulating the mobile device are provided. The mobile device is controlled according to need, of circumscribed brain structures and brain systems. The device for transcranial electric current stimulation includes the following components:—electrodes with fasteners to exactly position the electrodes on the skin of the head and electrical connecting lines and—a transportable, miniaturized stimulation generator comprising a current generator, a controller, a user interface, an electrical energy storage device and a monitoring and safety module with a separate electrical energy storage device.