it is said that the Aborigines of Australia
know a secret method of appearing invisible to
outsiders when they need to
i think it was David Icke in Tales From The Time Loop
who mentioned the story of a woman who checked in on a friend
who was meditating in a quiet room and when she looked in on him,
the lower half of his body was not visible to her at all. she saw
right through that part of him.
i was surfing some UFO-paranormal related sites
recently and came across a very interesting mention
about invisibility experiences
here is the page i found with some fascinating stories on it