Tool to decrypt/encrypt with semaphore flags. The semaphore alphabet is a visual communication system using hand-held flags by a standing man.
Flag Semaphore - dCode
Tag(s) : Communication System, Symbol Substitution
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Flag Semaphore
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Semaphore Decoder
Semaphore Encoder
Tool to decrypt/encrypt with semaphore flags. The semaphore alphabet is a visual communication system using hand-held flags by a standing man.
Answers to Questions
How to encrypt using Semaphore cipher?
The Semaphore encryption uses 2 flags (or other visual element) and a person, if possible standing (so as not to hinder arm movements).
Each letter as well as the character space is represented by a flag, the digits (1234567890) are represented by the letters from A to K.
Example: DCODE is translated .png)
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There are 3 special flags:
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Which allows to pass from the digits to the letters
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Which allows to pass from letters to numbers
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Which indicates an error or danger
Example: A1 is translated .png)
On this page, the flags are presented in the reception mode (a person emitting a message will have to imagine the character mirrored).
How to decrypt Semaphore cipher?
Semaphores decryption is done by matching the positions of the flags with the letters of the alphabet.
Example: .png)
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translates to SEMAPHORE
How to recognize a Semaphore ciphertext?
The message consists of humanoids with flags (or any other object) presented at the end of a stretched arm with multiple angles of 45 degrees (0, 45, 90, 135, 180, 225, 270, 315, 360).
What are the variants of the Semaphore flag cipher?
Sometimes the flags are used to code Morse, with 2 defined positions corresponding to point and dash.
Maritime signal codes uses another principle of flags to encode words.
When Semaphore flags have been invented ?
The system of flags and the alphabet spread throughout the world in the 19th century.
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Source code
dCode retains ownership of the source code of the script Flag Semaphore online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be given for free. To download the online Flag Semaphore script for offline use on PC, iPhone or Android, ask for price quote on contact page !
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