So help me understand the use case please.

Why would one want a physical tool to generate say a Bitcoin address?

Don’t I also need a private key? And secret phrase?

How do I know the address it generates isn’t always in use?

(Just trying to understand and wrap my head around this device)

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Thanks for the questions—Let me try to answer

First, a #bitcoin private key is just a number within a range. This physical private key’s bits (the bitting of a key) represent that private key number in binary form. There are 256 bits on this key, and when read in order result in a #bitcoin private key

>>Why would one want a physical tool to generate say a Bitcoin address?

This modulo private key is good for many things one example is being able to generate a private key completely offline. With good OPsec you can generate the public key and a receive address completely offline, as well. Plus, it looks pretty slick and makes great icebreakers lol

>>Don’t I also need a private key? And secret phrase?

This modulo private key *is* a private key, in physical form. A secret phrase can also be generated from this key completely offline. Remember, a private key is just an integer number

>>How do I know the address it generates isn’t always in use?

Whether you are referring to the receive address or are referring to the private key, don’t worry, it’s not going to generate an address already in use. The chance of repeating someone else’s address or private key number is impossibly low, and has the same chance whether you use the modulo private key or the latest #bitcoin mobile wallet. Practice good randomness when assembling the key is necessary. Still worried, check the output address to see if it already is in use on the blockchain

Hope that helps

Here is another explanation

Imagine you have a special mailbox, but instead of letters, it receives digital coins called Bitcoins. Here’s how it all works:

### Bitcoin Address:

Think of a **Bitcoin address** like your home address for your digital mailbox. It’s where people can send you Bitcoins. It looks like a long string of letters and numbers, kinda like an email address but way more complicated.

### Private Key:

Now, the **private key** is like the secret key to open your mailbox. Only you have this key, and you need it to access your Bitcoins. If someone else gets your key, they can take your Bitcoins, so it's super important to keep it safe and secret.

### How It Works:

1. **Getting Bitcoins**: Someone sends Bitcoins to your address. They need to know your address, but not your private key.

2. **Using Bitcoins**: When you want to use your Bitcoins (like spending or sending them), you use your private key to open the mailbox and take out the coins.

### Example:

Imagine you get a gift card in the mail. Your address (the mailbox) tells the mail carrier where to deliver it. To use the gift card, you need the card itself (the private key). Without the card, you can't use the gift.

So, remember: Your Bitcoin address is like your home address, and the private key is the secret key that lets you access and use your Bitcoins. Keep that private key super safe!