5 Design study I: How to create an ambulatory app for patients with BPP 167 Table 2. Prioritized design requirements. The higher a requirement is placed in the table the more labels correspond with the requirement. Design requirements ▪ Includes discreet (tactile and visual) signals that inform users of their level of PCEA*. ▪ Provides a view in which PCEA is visualized as a multilevel process, which is analogue to used methods and theory used in therapy. ▪ Allows the patient to adjust the frequency and timing of signals (turn signals on and off; increase and decrease frequency of signals). ▪ Includes free entry of personal tips or skills that will pop-up as a notification at certain levels of arousal, based on the users’ preference. ▪ Includes a view in which the continuous course of PCEA is visualized as a graph. ▪ Enables the patient to adjust of the type of signal (sound, light, vibration et cetera). ▪ Enables the patient to activate standard tips or skills, that will pop-up or appear as a notification at certain stages of emotional arousal, based on the users’ preference. ▪ Allows the patient and therapist to switch between views (i.e., the multilevelview and the graph-view). ▪ Provides information about the time the patient spent or is spending at different levels of arousal. ▪ Enables the therapist to activate and deactivate access to user-accounts of patients. ▪ Enables the therapist to look into the PCEA data patients shared with them. ▪ Includes a built-in tutorial on how to use the system correctly. ▪ Allows the patient to look into its personal PCEA history. ▪ Allows the patient to share PCEA output with their therapists. ▪ Includes a personal user account for therapists. ▪ Includes a personal user account for patients. ■ ≥ 6 labels ■ 3-4 labels ■ 2 labels ■ Neutral
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