How to make a spot to enter codes

I would like to make a Minecraft minigame map where you can enter a code to get something. Here is how I would like it to work.

When you first join you get a written book inside it says:

Instructions:
Bla bla bla
Click "here" if you have a code.

Then if you click "here" it gives you a book and quill that says:

Enter code below:
Code:

Then they type a code, sign, close it and title it "code". Then takes it and gives them a reward or something.

minecraft-java-edition

Pictures about "How to make a spot to enter codes"

How to make a spot to enter codes - Code Projected Over Woman

How to make a spot to enter codes - Person in Black Shirt Walking on Sand

How to make a spot to enter codes - Silhouette of Person Standing Near A Doorway With Bright Light

Where do you enter codes on Robux?

How Do I Redeem a Promo Code?

Make sure that you're logged into your Roblox account on which you want to redeem the code.
Go to the Code Redemption Page.
Enter your code in the box.
Click Redeem.
A success message will appear once you've successfully redeemed the Code.
You will get Credit, Robux, or a Virtual item.

How do you enter a code?

How to redeem a code on an iOS or Android mobile device. Go to https://redeem.microsoft.com. Enter the 25-character code, and then follow the prompts.

Where do you enter codes on fortnite?

How to redeem Fortnite code via the Epic Games Store

Open up your internet browser of choice.

Go to the Epic Games website store.

Your name will be shown in the top right corner, click that and then click Redeem Code.

Enter the code, and then press Redeem.

How do you enter codes in mobile legends?

How to redeem codes in Mobile Legends?

Load up the game and head over to 'Settings'.

Select the Mobile Legends code exchange page.

You'll need to be logged into your account to redeem Mobile Legends codes and know your account ID. ...

Now head to the Mobile Legends website and visit the corresponding Code Exchange page.

How To Redeem Roblox Codes (Mobile + PC) | Redeem Codes On Roblox

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Valeria Boltneva, ThisIsEngineering, Mo Eid, Mo Eid