Table 2.

Example of high-level requirements for deploying a wearable tracker in different application contexts

Application context	Wellness/Fitness	Clinical trial
Use case	User: healthy middle-aged adult engaging in employee wellness programme in a large multinational organisation	User: volunteer participant in clinical trial
	Provider: employer/health Insurer	Provider: Clinical Trial Organisation
	Goal: monitor activity, sleep, mood and nutrition during a healthy lifestyle promotion initiative. Primary goal is to provide summary and trend reports back to employees to motivate them during programme.	Goal: monitor participant’s activity and sleep during study to provide for accurate measurement of impact of therapeutic intervention.
Device requirements	• Unobtrusive, with deploy and forget capability • Flexible body location • Measurement accuracy desirable, yet not critical • Battery life: >3 months preferable • Automated synchronisation with user’s own data aggregation & communication device (e.g., smartphone) • Automated upload to server.	• Unobtrusive, with deploy and forget capability • Wrist worn location • Validated measurement accuracy, supported by regulatory filing • Battery life: >1 week • Automated synchronisation with provisioned data aggregator • Automated upload to server.