Once you are logged into your account on Dr. iQ application, please:
Tap your profile icon on top left
Enable Biometric Authentication
Confirm by tapping 'Enable' button
It will ask you to enter your email address & password to authenticate the action, please follow.
We hope this helps. If you face any difficulties in this regard, please email us at support@dr-iq.com or our phone number is 020 3743 3033.