Forgotten, hell. Picasso said it--"Good artists copy, great artists steal."
I think Banksy said that,
That mark is useless without the table that tells you what each distance represents. So on that matchstick you haven't stored data, merely a hash of that data.
Incorrect: as long as you can measure that mark as a distance with arbitrary precision you can use that to convey any amount of data. For instance, your distance could be 0.7269767679 mm, which, with a simple 1:1 dec to ascii conversion is 0.HELLO, assuming you use fractions of a millimeter for your data. See? With infinite precision comes infinite data. Infinite precision is, of course, difficult to impossible in the real world, but that's never stopped me before.
Just go with the flow control, roll with the crunches, and, when you get a prompt, type like hell.