A method of guiding positioning of a headset (100) for transcranial brain stimulation on a head of a user of the headset (100) is disclosed The method comprises: capturing, using a camera, one or more head images depicting the head； detecting, in the one or more head images, features of the head； creating, using the detected features of the head, a model of the head； computing, using the model of the head, an intended headset position on the head； and displaying, on a display, a representation of the headset as an overlay on an image of the head of the user. Also a kit comprising a headset (100) for transcranial brain stimulation, and a non-transitory computer-readable recording medium is disclosed. The non-transitory computer-readable recording medium having recorded thereon a program which is executable on an electronic device (150) having processing capabilities, wherein the program is configured to perform the method of guiding positioning of a headset (100).
