To use the Tap Code Encoder/Decoder tool, follow these steps:
1. Choose Encode or Decode: Select the direction with the option chips.
2. Enter your message: Type plaintext to encode, or tap patterns (use dots or numbers) to decode.
3. Read the output: Encoded messages show dot patterns; decoded output shows the original text.
4. Audio playback: Click the Audio chip then Play Taps to hear your message tapped out.
When to Use the Tap Code Tool
The Tap Code Tool is ideal for anyone who needs to encode or decode messages in a covert manner. It was originally used by American prisoners of war held at the Hanoi Hilton during the Vietnam War. The Tap Code is a form of communication based on the Polybius square, used primarily by prisoners to communicate through walls.
Frequently Asked Questions
The Tap Code is a cipher based on a 5x5 Polybius square where C and K share a cell. Letters are communicated by tapping row then column numbers through a wall. It became famous as the communication method used by American POWs at the Hanoi Hilton during the Vietnam War.
The 26-letter alphabet doesn't fit in a 5x5 grid. Tap Code removes K and uses C for its sound, so LIKE becomes LICE. Context makes the meaning clear to the reader.
Find the letter in the grid. Tap the row number first, pause briefly, then tap the column number. A longer pause separates one letter from the next. A = row 1, column 1 = one tap, pause, one tap.
Tap Code was used by American POWs in the Hanoi Hilton during the Vietnam War (1960s-1970s). It was taught by Smitty Harris and allowed prisoners to communicate despite strict isolation, maintaining morale and command structure.
Morse code uses dots and dashes (two symbols) with variable-length sequences. Tap Code uses only taps with pauses to encode fixed two-number coordinates. Tap Code is simpler to learn and produce with just a knuckle on a wall but slower than Morse.
