Personal Informatics Prototype: Chew
Quick Snapshot
- Role: Product researcher and designer on a graduate studio team
- Team: Multidisciplinary student team spanning HCI, design, and engineering
- Customers: Individuals looking to build healthier eating habits and public health researchers studying population-level nutrition
Mandate / Opportunity / Problem Scope
Most food tracking apps demand tedious manual entry. We set out to imagine a passive Apple Watch + iPhone experience that could monitor pace, frequency, and duration of eating to give people actionable insight without calorie logging.
What I Led / Delivered / Highlights
- Framed the behavioral problem through secondary research on U.S. nutrition trends and user interviews.
- Defined a passive sensing approach using Apple’s Core Motion and Watch Connectivity frameworks to infer arm movements tied to eating.
- Designed minimal watch and phone interfaces focused on two core metrics and lightweight calibration to improve accuracy.
- Outlined an implementation roadmap and public-health partnership model for running population-scale studies.
Impact / Lasting Value / Takeaway
Chew demonstrated how wearables could unobtrusively coach better eating habits while generating datasets valuable for researchers, laying groundwork for future passive personal informatics tools.