> corresponds to a particular symbol in a table". This part is also not the truth. The data on paper can be as simple as a serial number and valid signature. T

> corresponds to a particular symbol in a table". This part is also not the truth. The data on paper can be as simple as a serial number and valid signature. Take a real world example: concert ticket. Or digital example: jwt ticket. The paper with "something you don't care but they know" is a proper description in my opinion.