We notice that every 36th bit is a zero, which divides the signal into 35-bit chunks. The first five of these chunks are all 1 bits...as are the last seven. This evidence points to the idea of breaking down 35 into its prime factors: five and seven.
If we consider those factors as dimensions of a rectangle, then we can convert each chunk into a 5x7 bitmap:
Ignoring the solid blocks (the "meter"), we can read the message even before we've converted it into ASCII!
But being able to read it isn't the only requirement for a safe ASCII conversion. The specific numbers must be looked up in a standard table, to produce the string:
(Thanks for stopping by! If you find ideas like this interesting, then you may also be interested in some of my other projects...like blackhighlighter. It seeks to aid transparency in communication by making it easy to publish most of your correspondence in public, while still committing to what you said in the hidden parts. Check it out!)
