Depending on the color of the LED to the right of the display:

• Red LED: The good buttons form a sequence of letters with equal distance in the alphabet, wrapping around from Z back to A.
• Yellow LED: The good buttons, when read in reading order, form a five-letter English word that is encoded using Atbash cipher. In this cipher, A↔Z, B↔Y, C↔X, etc.
• Green LED: The good buttons, when read in reading order, form a five-letter English word that is encoded using ROT13. In this cipher, A↔N, B↔O, C↔P, etc.
• Turquoise LED: The good buttons have letters whose Morse code begins with the same two symbols.
• Blue LED: The good buttons have letters whose international maritime signal flags share a common color.
• Purple LED: The good buttons have letters whose flag semaphores share a common flag position.
• Pink LED: The good buttons have letters whose Pigpen cipher representations all have or don’t have a dot.

Depending on the color of the LED to the right of the display:

• Red LED: The good buttons show numbers with the same remainder after division by 4, 7, 9 or 11.
• Yellow LED: The good buttons show numbers with the same number of lines or the same number of dots in Zoni.
• Green LED: The good buttons either all show prime numbers, or all show composite numbers.

The buttons display letters using various encodings. The good buttons show either all the same letter, or a five-letter English word in reading order.

Encodings used include Braille, Lombax, international maritime signal flags, Morse code, pigpen cipher, flag semaphore, Standard Galactic Alphabet, Zoni, and numeric position (decimal or binary).

The Standard Galactic Alphabet is as follows:

The good buttons show either:

• one or two letters, first letter capitalized:
  • chemical element symbols, with the sixth button not a valid chemical element symbol;
  • chemical element symbols from the same row or same column on the periodic table, with the sixth button another valid chemical element symbol;
• two capital letters: US state abbreviations;
• three capital letters:
  • ISO country codes from Flags;
  • ISO currency codes from both Flags and Foreign Exchange Rates; or
  • codes from Morse War.

The good buttons show the following numbers corresponding to their colors, but with a consistent offset added:

0 = black, 1 = blue, 2 = green, 3 = cyan/teal, 4 = red, 5 = magenta, 6 = yellow, 7 = white

The buttons have colors and display the corresponding color name. The colors on the good buttons all have the same R, G, or B value in the following table: