@rebane2001 here I was thinking I understood qr codes, what do mean you only need 30%?? But- I- I thought it’s like a deck of cards with like too many possiblties to be realistically found in a lifetime… so wouldn’t that mean that if we only look at 30% of it, it could happen that it has the same 30% as another code? Like if I only look at the top two cards it’s totally possible to get ace heart and ace spade again with the rest still totally jumbled..