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  2. Hidden message - Wikipedia

    en.wikipedia.org/wiki/Hidden_message

    Hidden messages include backwards audio messages, hidden visual messages and symbolic or cryptic codes such as a crossword or cipher. Although there are many legitimate examples of hidden messages created with techniques such as backmasking and steganography , many so-called hidden messages are merely fanciful imaginings or apophany .

  3. Steganography - Wikipedia

    en.wikipedia.org/wiki/Steganography

    The same image viewed by white, blue, green, and red lights reveals different hidden numbers. Steganography (/ ˌ s t ɛ ɡ ə ˈ n ɒ ɡ r ə f i / ⓘ STEG-ə-NOG-rə-fee) is the practice of representing information within another message or physical object, in such a manner that the presence of the concealed information would not be evident to an unsuspecting person's examination.

  4. Apophenia - Wikipedia

    en.wikipedia.org/wiki/Apophenia

    Apophenia (/ æ p oʊ ˈ f iː n i ə /) is the tendency to perceive meaningful connections between unrelated things. [1]The term (German: Apophänie from the Greek verb ἀποφαίνειν (apophaínein)) was coined by psychiatrist Klaus Conrad in his 1958 publication on the beginning stages of schizophrenia.

  5. List of steganography techniques - Wikipedia

    en.wikipedia.org/wiki/List_of_steganography...

    Hidden messages distributed, according to a certain rule or key, as smaller parts (e.g. words or letters) among other words of a less suspicious cover text. This particular form of steganography is called a null cipher. Messages written in Morse code on yarn and then knitted into a piece of clothing worn by a courier. [1]

  6. Invisible ink - Wikipedia

    en.wikipedia.org/wiki/Invisible_ink

    Using either ultraviolet light or an iodine fume cupboard, messages can be quickly screened for invisible ink and also read without first permanently developing the invisible ink. Thus, if a censor uses this method to intercept messages, the letter may then be sent to the intended recipient, who will be unaware that the secret message has ...

  7. List of backmasked messages - Wikipedia

    en.wikipedia.org/wiki/List_of_backmasked_messages

    Contains many backwards and hidden messages, both visual and auditory. [34] It was a further response to the Satanic backmasking controversy. [31] The British release contains a parody warning label about the backward messages, but this was deleted by CBS Records for the United States version. [33] Missy Elliott "Work It"

  8. Easter egg (media) - Wikipedia

    en.wikipedia.org/wiki/Easter_egg_(media)

    An Easter egg is a message, image, or feature hidden in software, a video game, a film, or another—usually electronic—medium. The term used in this manner was coined around 1979 by Steve Wright, the then-Director of Software Development in the Atari Consumer Division, to describe a hidden message in the Atari video game Adventure, in reference to an Easter egg hunt.

  9. Pareidolia - Wikipedia

    en.wikipedia.org/wiki/Pareidolia

    Satellite photograph of a mesa in the Cydonia region of Mars, often called the "Face on Mars" and cited as evidence of extraterrestrial habitation. Pareidolia (/ ˌ p ær ɪ ˈ d oʊ l i ə, ˌ p ɛər-/; [1] also US: / ˌ p ɛər aɪ-/) [2] is the tendency for perception to impose a meaningful interpretation on a nebulous stimulus, usually visual, so that one detects an object, pattern, or ...