I had an idea lately and I want to know it is actually a good idea.
Let say I publish a game as PDF and after the release I want to give to new material, like rule and components update, that should be only exclusively download by people that actually bought the game.
My solution was to pasword protect the PDF and give the key to get the password in the rule book which was sold. Since I don't want a unique identifier for each copy sold, so what I wanted to do is:
- The rule book comes with a decoding table. Each game would have a different table but it would work the same way.
- Each PDF file released will have a numeric code. If you pass this code in the table you get the password required to open the PDF.
What do you think?
Does it really worth it?
Is it going to get cracked fast, or are the key table going to be distributed on the net rapidly?
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Here is how it works. The key table is a 5x5 grid where each square contains a letter from A to Y. The rows are numbered 0-4, the columns 5-9.
When you download the PDF file, you get a numeric code like 1526-3748. For each pair of number you look at the matching row/columns, the result in the grid is a letter of the password. So for example 15 means row 1, column 5.
What prevent people, who does not have the key, to decode any value, even if they know how it works, is that the letters in the grid are always distributed differently.
I also get many grid construction possibilities so I will never run out of key table combinations and each game can have a unique key table.
What do you think?
So you mean that websites that sell print and play games can also distribute free updates and add-ons to the people who ordered the original product?