Answer: un example. It depends on whether you want to become invisible as geographical location or physical presence, but in both cases, you may use te same technique which is very effective. Thus: the detection of presence is most a psychological event. You are a determined appearance located in a certain place. Your attachment to the knowledge of your appearance and location is the psychological factor that makes you ‘visible’. The more you develop thought and consciousness around your presence, the more your presence becomes visible. Thus, people who do this, do have a marked presence in parties, or restaurants or the kind, so that their appearance does not stay without being remarked. This observation does easily lead to the due exploitation of the contrary (very funny exercise, though implying limit dangers in weak personality characters).
Figure thus out that you situate yourself in your consciousness in the awareness of your geographical location. On the other hand, make some exercises to synthesize the notion of ‘none’ or ‘other’. Arriving at your conscious location, associate the ‘none’ or ‘other’ to this place. The possibilities, nobody does see you while your physical presence is insisting on your reality is 1 out of 2. If you want to push your invisibility to the borders of magic, you need some 2 or 3 synthesis of psychic types. A psychic type is a notion of the psychic impression left by one or a group on you, thus ‘Spaniards’ leave some common impression on someone else, independently of the personal character. Thus do doctors, or soldiers, or workers. If you have these notions, it is enough to associate the ‘I’ in identity to one of those, not corresponding to your actual features. The perception of a psychic type not corresponding to your reality, may make your presence stay completely unknown or associated to a character you’re not, even if you don’t tell lies concerning your factual identity, nobody is ever going to believe to.
These techniques are theoretical developments of the logical structure of illnesses such as schizophrenia and psychopathia. They are very effective but may have as consequence the complete loss of personality up to psychotic crisis in people with weaker character. Because whenever you play with mind, and specially with these hypothesis, you are obliged to cut yourself in two, with a back reminder of your real identity or location. The construction of a back reminder is not easy, because it implies the need of a personal subjective synthesis of identity. People with weaker character are unable of doing so, as they put their identity in an image, and their faculties of thought are not developed enough so as to dissociate the image from the real identity. While playing with identity, the new ‘character’ does fuse with the ‘personal identity in image’, causing a probable irreversible confusion of both.
To take an example of common reality, you may easily observe this phenomenon in actors: Tarzan actor Weissmüller finished by believing himself … Tarzan.