1. Open the AppStore application on the Apple device. Enter "Coin Security" in the search box of the AppStore. Find the currency security application in the search results, and click to enter the application page.

2. Click the "Get" or "Install" button on the application page. You need to enter the AppleID password or use TouchID/FaceID for verification. Wait for the application to download and install.

3. After the download is completed, you will find the icon of the currency security application on the main screen of the device or in the application library.

4. Click the icon of the currency security application to open the application, and follow the prompts to set up and log in.