Techniques for tracking a progression of a therapeutic procedure that is performed by a patient are disclosed. A notification is received from a server computer system. This notification relates to a tracking process designed to monitor a progress of the patient in performing the therapeutic procedure. After receipt of the notification, a UI is displayed. This UI has a particular visual layout that is designed to facilitate the tracking process. In response to a particular field being selected within the UI, a secret key that de-identifies the patient is accessed. The accessed secret key and a specific image are then encrypted. As a consequence, encrypted data is generated. The encrypted data is then transmitted to the server computer system.