Let’s go through some key terminology and take a closer look at an example Chaindeck card.

Each card is part of the system that lets you arrange and encrypt your seed phrase using a simple 3-digit PIN.

• The numbers on the left (0–9) correspond to the first digit of your PIN.

• The numbers on the top (0–9) correspond to the second digit of your PIN.

• Together, they form a 10×10 grid in the center, filled with unique sorting numbers.

• The colored arrows at the bottom correspond to the third digit of your PIN, showing you the sorting direction. 

• The visual guides (white crosses) will help you locate and track the sorting numbers.

• Every deck contains 100 cards numbered 00–99.

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This system ensures that only someone with the correct 3-digit PIN can restore the correct sequence of cards and reveal the hidden phrase.