# Keystone Tablet Instruction Guide

Please follow these instructions while assembling the Keystone Tablet.

## **I. Steps**

1\. Slide counterclockwise to open the Keystone Tablet.

<figure><img src="https://2420738387-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVozfoQsxc6YFPQfVTB%2F-MkW0LojazgA42npZXjV%2F-MkW10Qpz9hQ5BWJ9VuC%2F2.jpg?alt=media&#x26;token=76a638d4-d0dd-4549-abf4-8f5763cd5370" alt="Keystone Tablet-1"><figcaption></figcaption></figure>

2\. Use the screwdriver provided in the box to unscrew the three screws shown in the picture below, and proceed to insert the letter tiles in the slots provided.

<figure><img src="https://2420738387-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVozfoQsxc6YFPQfVTB%2F-MkW0LojazgA42npZXjV%2F-MkW13dI9rvFhBf6QbQU%2F3.jpg?alt=media&#x26;token=9b4f8df5-f121-4e91-a36d-78cf69d988e1" alt="Keystone Tablet-2"><figcaption></figcaption></figure>

3\. Find the corresponding stainless steel letter tiles and place them in their respective slots based on your mnemonic. Insert the first four letters of each word.

<figure><img src="https://2420738387-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVozfoQsxc6YFPQfVTB%2F-MkW0LojazgA42npZXjV%2F-MkW1pjq8sa6YNyndYyJ%2F7.jpg?alt=media&#x26;token=afe39555-9b95-451a-b991-a0915a3c5bd5" alt="Keystone Tablet-3"><figcaption></figcaption></figure>

## II. FAQ

### 1. How do I retrieve the complete word based on the first four letters？

Each empty slot of the Keystone Tablet can be placed in 4 letter slots. According to BIP39, the first 4 letters of each word in the mnemonic list are different. That is, four letters can be used to represent a unique mnemonic. If you encounter a 3-letter mnemonic, you can fill the empty space with the blank side (reverse) of the letter tile. You can view the 2048 mnemonic list here.&#x20;

{% embed url="<https://github.com/bitcoin/bips/blob/master/bip-0039/english.txt>" %}

### 2. What should I do if the letters provided are not enough?&#x20;

The number of letter tiles provided by the Keystone Tablet is calculated based on the probability that each letter will appear in the mnemonic list. However, a small probability that a certain letter is not enough does exist. You can solve the problem via the following methods:

* The character blocks "b" and "q", "d" and "p", "n" and "u" can be used interchangeably. Please confirm if your problem still exists.
* Use the blank side of a letter tile instead.
* Generate new mnemonics and assemble. (The probability that the character block is not enough again is almost zero.)

[Number of letter tiles.xls](https://docs.google.com/spreadsheets/d/1KqQLm1Vb9iygIi_K1i3Q8Xhg6m4uezLN/edit#gid=640823393) &#x20;

{% content-ref url="why-does-the-keystone-tablet-have-only-4-slots-for-a-word" %}
[why-does-the-keystone-tablet-have-only-4-slots-for-a-word](https://support.keyst.one/keystone-table/why-does-the-keystone-tablet-have-only-4-slots-for-a-word)
{% endcontent-ref %}