# How to Set Up and Use Custody Safe

### 1. **Download the SmashFi Custody Safe App** (iOS / Android).

<figure><img src="https://2260387934-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMxPfaVCLU0Czhjxw23iD%2Fuploads%2FyOXPmj6hRzKsN6wKTilB%2Fcustody-download.png?alt=media&#x26;token=cc423974-cf38-4b5c-a148-798425916cda" alt=""><figcaption></figcaption></figure>

### 2. **Log into your account on** [**smashfi.me**](https://smashfi.me/auth/login)  (web).

## (App ↓)

### 3. Upon launching the app, you’ll first be asked to set up security using biometrics or passcode. Then, you’ll be guided through creating and backing up your wallet step by step.

### 4. **Scan the QR code** displayed on the Custody Safe page to link your wallet.

<figure><img src="https://2260387934-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMxPfaVCLU0Czhjxw23iD%2Fuploads%2FAPvdX80v6ESQSXr7ltHL%2Fcustody-button.png?alt=media&#x26;token=da073edb-13a6-473d-a737-eb545a894143" alt=""><figcaption></figcaption></figure>

<div><figure><img src="https://2260387934-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMxPfaVCLU0Czhjxw23iD%2Fuploads%2FifGmkjdRlnpiMDL6WDb8%2FscanQR.PNG?alt=media&#x26;token=be0c384a-8580-4585-ab5d-4610ab400f0f" alt=""><figcaption></figcaption></figure> <figure><img src="https://2260387934-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMxPfaVCLU0Czhjxw23iD%2Fuploads%2FgHVrLnrJrrF1Z9gr6G2V%2FScanQR-camera.PNG?alt=media&#x26;token=6ed3f1f5-2301-4e97-945c-d1fdbf21f88f" alt=""><figcaption></figcaption></figure></div>

### 5. Follow the app instructions to complete setup step by step

* Private keys are generated securely on your device using MPC
* The app will guide you through creating your wallet and backing it up.

> <mark style="color:$danger;">**⚠️ Don’t forget to back up your wallet when prompted. It’s the only way to recover access if your device is lost.**</mark>

### **6.** Seamlessly transfer BTC earned through Auto-Buy, Boost, or Swap to Custody Safe — with zero blockchain fees (if eligible).

### 7. **To withdraw BTC later**: you can move Bitcoin from Custody Safe to any external wallet at any time.<br>