You will need to download the Circle Access on your mobile device before you can use it's features. If you haven't done so already you can download it here:
For many applications you may be required to have your phone number registered to your Circle Access account. To do so launch the app and tap the settings tab. Tap "My phone #".
Tap "Add New Phone#"
Enter the phone number which you wish to associate with your account. And tap Send Verification.
An authentication code will be sent to the number.
Copy that number into the the text field, and tap "Process Verification".
If the authentication was successful you will see the following:
How to Add Your Email to Circle Access Mobile
How to Enable Biometrics in Circle Access Mobile