Ads
related to: reveal invisible ink messagesvistaprint.com has been visited by 100K+ users in the past month
appcracy.com has been visited by 1M+ users in the past month
Search results
Results From The WOW.Com Content Network
Invisible ink. A coded letter from Benedict Arnold, originally written in invisible ink. Handwriting by Peggy Shippen Arnold is interspersed with coded communication in Arnold's hand. Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and ...
Hidden messages on a paper written in invisible ink. 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 ...
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.
Moreover, such messages can be easily visible when exposed under glancing light. Unlike other invisible inks, which require heat or placing chemical liquid over to reveal the message, the UV invisible ink can be scanned and read quickly with an ultraviolet light source without damaging or changing the surface of the paper.
Among the techniques that the Culper Ring used to relay information were coded messages published in newspapers and invisible ink, [46] called a sympathetic stain, to write between the lines of what appeared to be typical letters. In the first months of the ring's operations, they were forced to rely on crude tactics to conceal their ...
Decoder pen. The decoder pen, yes-no pen, yes-know pen or magic pen book is a combination of decoder pen or marker specially designed to reveal invisible ink -encoded pictures or writing, [1] in the form of answers to questions or hidden parts of pictures, with specially created children's books with hidden words and pictures.
Aburidashi. Aburidashi is a ninja technique of sending secret messages using a form of invisible ink. [1] The technique uses ink made of juice extracted from soaked and crushed soybeans. [1] The message becomes visible to the recipient by heating the paper.
The Five Find-Outers. The Five Find-Outers and Dog, also known as The Five Find-Outers, is a series of children's mystery books written by Enid Blyton. The first was published in 1943 and the last in 1961. Set in the fictitious village of Peterswood based on Bourne End, close to Marlow, Buckinghamshire, the children Fatty (Frederick Trotteville ...