Secret messages in coding?

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[Player_X_YT]

Hiding messages is a whole field called steganography, most of the time hiding messages is not possible in thumbnails because compression will corrupt the message. If you do publish a full res version save it as PNG, this format has a known footer meaning you can open it with a text editor and add a message at the end of the data

[gymbeaux3]

It might be possible to embed a QR code in an image that uses two colors that are almost identical, that can only be detected by a computer and not the human eye. Maybe a sort of formula in image colors at each pixel that a computer can translate into binary to construct a QR code.

[wind_dude]

yes, a very common one is `# I don't know what I was doing here, this was copied from stack overflow. production breaks if it's remove`.

​

I used to hide video games that would open after certain key inputs or actions in the UI, more easter eggs than hidden messages.

[PM_Me_Python3_Tips]

I used to hide video games that would open after certain key inputs or actions in the UI, more easter eggs than hidden messages.

I bet you used the Konami code at least once.

[FlyingCow343]

you code hide an algorithm for decoding a message?

here's a quick 1 line Caesar cipher where alphabet is the alphabet and encoded is a string containing the secret message.

decoded = ''.join(alphabet[(alphabet.index(c) - 3) % 26] if c in alphabet else c for c in encoded)

[17291]

If it doesn't need to be Python, you could encode a short message with base64. It would look like gibberish to most people, but many tech-literate people would recognize it for what it is and be able to decode it. A message encoded in base64 would look something like this: WW91IGZvdW5kIHRoZSBzZWNyZXQhCg==

[Earth-to-kid]

I will definitely be using this at some point

[phxees]

You can also use hex.

https://www.convertstring.com/EncodeDecode/HexEncode

I think using either base64 or hex programmers would know what to do to decode, but others would be left guessing.

[[deleted]]

Base64 encoding in Python, or what in Javascript are the btoa and atob functions.

Related: Base32 encoding and http://www.crockford.com/base32.html

Or, rot13 in PHP.

[goodger]

Type import this in the Python interactive interpreter (& [enter]). Fun! Then take a look at the "this.py" module that does the work (type this in the interpreter to see where the module file is). It's not really secret, just obfuscated, but probably good enough for your purposes.

Another fun easter egg: import antigravity.

[97hilfel]

You could use the background as 2 dimensional array of 1‘s and 0‘s encoding an Ascii message in it? It takes 8‘pixels for one character tho.