Table 2:

Number of steps to complete each sub-task

High-level Task	Task Name	Mean (SD)	Range
Log In	Find the “Enter secret key” button	1.4 (0.7)	1–3
	Enter secret key	1.6 (0.7)	1–3
	Enter DOB (Time 1)	2.3 (0.95)	1–4
Set up “My Routine”	Find “my routine” section	4 (1.83)	2–7
	Modify “My routine”	4.4 (7.32)	1–24
	Save “My Routine”	1 (0)	n/a
Set up “My Medications”	Find “My Medication” section	2.7 (4.35)	1–15
	Enter + button to add medication	1.6 (1.07)	1–4
	Enter Medication Name	1.7 (1.25)	1–4
	Enter Dose of Medication	1 (0)	n/a
	Enter Frequency of Medication	1 (0)	n/a
	Enter time for medication to be due	3.5 (4.5)	1–16
	Save Medication	1.1 (0.32)	1–2
Confirm Medication was added to “To-do” list	Find “To Do List” section	8.3 (7.23)	3–22
	Confirm Medication was added to list	1.1 (0.33)	1–2
Manage Medication Tracking Bottle	Open medication tracking bottle	1.7 (1.34)	1–5
	Close medication tracking bottle	1 (0)	n/a
Connect Fitness Tracker	Find “Connected device” section	2.7 (1.42)	1–6
	Select “Fitbit” to link	1.2 (0.42)	1–2
	Select “all” to set up “Fitbit”	1 (0)	n/a
	Select “allow” for Fitbit setup	1.1 (0.32)	1–2
Log out	Log Out (First attempt)	4.3 (1.64)	3–7
	Select Log back in	1.3 (0.48)	1–2
Log back in	Select “Log Back In”	1.1 (0.32)	1–2
	Enter email to log in	1.2 (0.63)	1–3
	Enter Gmail section	1.6 (0.84)	1–3
	Enter DOB (Time 2)	1.3 (0.95)	1–4
	Find “Review Medication History” section	5.75 (6.27)	1–18
	Review Medication history	2.7 (2.26)	1–6
Confirm Fitness Tracker recorded steps	Find “Confirm steps” on home screen	4.5 (4.74)	1–16
Log out (Final)	Log Out (Time 2)	4 (3.46)	1–12