Using Circle Access Mobile you can add multiple devices to your profile. Allowing you to use multiple methods of authentication.
To add another application to your device, open the Circle Access Mobile App. Tap My devices
You will be provided with a list of your currently registered devices.
Tap Add new devices.
You will be presented with the following screen.
You will now Scan the QR code on the device you are adding.
After scanning the QR code you will see the following screen showing you that it was successful.
The device will now also show in the list