1. Create a new API key
To create the key, go to https://setting.bitfinex.com/api. During creation, select only the permissions you want your mobile app to have. For example, you could give the key read permission for orders but not write permission. This would allow your app to view orders, but not place new ones, increasing the safety of your account in the event of a compromised device.
2. Scan the QR code
When the API key from step 1 has been created, a QR Code will be shown in your browser (only once). Now, using your app and your phone's camera, you can scan this QR Code to import the API key.
Load the Bitfinex mobile app on your phone or tablet and press the LOG IN button.
You will be asked to Add Key or Scan QR. You can either scan the QR code or type in the API key and API key secret from the previous step. If you scan the QR code from the Bitfinex website, the API key and API key secret will be automatically entered into the fields for you.
Note: To scan the QR code, you must allow the Bitfinex app to access your camera.
Note: Be sure to record your API key and secret somewhere safe. It will not be shown again.
3. Create a PIN code
Create a PIN (4 numbers) and click Save.
After this initial setup, logging into the mobile app is performed via the PIN.
Note: If your device supports fingerprint or face recognition, they can also be used to log in.