BackTech: Your Personal Posture Guardian

BackTech: Your Personal Posture Guardian

BackTech: Your Personal Posture Guardian

Preventing tomorrow's back pain, one notification at a time

Role

UX Researcher & Designer

Timeline

5 months

Platform

IoT Wearable + Mobile App

Tools

Arduino, Figma, Miro

Team

Rosalie, Samartha, Yian, Xilei

Team

Rosalie, Samartha, Yian, Xilei

Recognition

🏆 Voted Most Feasible in 5-10 Years

Recognition

🏆 Voted Most Feasible in 5-10 Years

TL;DR - FOR THE BUSY RECRUITER

The Problem

Prolonged sitting is the new smoking—and we're terrible at managing it

Remote work has us sitting 7+ hours daily with inconsistent posture awareness, leading to chronic discomfort in the lower back and neck. Existing solutions require conscious effort, making them easy to forget when you're deep in work.

Our Solution

Passive monitoring meets active guidance

BackTech is an innovative IoT wearable with smart sensors that monitor posture in real-time, paired with a mobile app that delivers personalized alerts, corrective stretches, and educational resources—all designed to work with your workflow, not against it.

My Contributions

End-to-end research, hardware prototyping, and system design

I led diary study kit design, moderation, and analysis across 7 participants; co-designed and analyzed a 104-response survey; led design and moderation of user enactment sessions; coded light sensor functionality; designed physical prototype sensors; and contributed to overall system architecture.

👉 This case study is a high-level overview — full research, prototypes, and system details are available on the project website.

Why design for posture?

BackTech was developed for course SI 612: Pervasive Interaction Design at the University of Michigan School of Information.

Motivation




Prevalence of discomfort after prolonged sitting




Rise in remote & hybrid working mode




Technological Integration in Health

The rise of hybrid and remote work models has fundamentally changed how we interact with our workspaces. Without the natural movement of office environments, professionals are sitting longer with worse posture—and feeling it. Our formative research revealed:

  • 7+ hours of daily sitting among participants

  • Frequent discomfort during and after work sessions

  • Inconsistent awareness of posture while focused on tasks

  • Clear desire for improvement but lack of actionable guidance


The Gap

People want to improve their posture and overall health, but existing solutions require active participation at moments when they're least likely to think about it.

How do you design a device people will actually wear?

Starting from unique challenges
  • Invisible behavior: Posture is unconscious—how do you make the unconscious conscious without being intrusive?

  • Wearability concerns: Previous attempts at posture devices felt medical or bulky

  • Behavior change: Moving from awareness to action requires more than just data

  • IoT complexity: Balancing sensor accuracy with user-friendly technology

Our Research-Driven Approach
📖 Diary Study (7 participants, 1 week)

Captured real-time experiences with sitting, discomfort patterns, and existing coping strategies

📖 Diary Study (7 participants, 1 week)

Captured real-time experiences with sitting, discomfort patterns, and existing coping strategies

📊 Survey Research (104 responses, 15 questions)

Validated pain points at scale and identified key target areas (lower back, neck)

📊 Survey Research (104 responses, 15 questions)

Validated pain points at scale and identified key target areas (lower back, neck)

🎭 Experience Prototyping (1 scenario, 5 participants)

Tested the monitoring and feedback concept before building hardware

🎭 Experience Prototyping (1 scenario, 5 participants)

Tested the monitoring and feedback concept before building hardware

👥User Enactment (6 scenarios, 3 users)

Refined sensor placement guidelines and functionality explanations

👥User Enactment (6 scenarios, 3 users)

Refined sensor placement guidelines and functionality explanations

Seamless integration, personalized guidance

Wearable Design: Smart sensors that disappear into your routine

Prototype of sensor

Strategic placement on key back joints for accurate posture detection

Status lights for quick connection confirmation


Vibration alerts for immediate, private feedback

Mobile App: Your personal posture coach

Easy pairing with intuitive setup flow

Real-time monitoring with clear visual feedback

Real-time transparency: Status updates during stops to reduce anxiety

The System in Action

Check Out Our Prototype: Click the image to interact with our Figma prototype!

What we learned from testing

Key Insights

Positive reception of passive monitoring—users appreciated not having to remember

Guidance is critical—alerts without clear next steps caused frustration

Customization matters—one-size-fits-all sensitivity led to alert fatigue

Areas for Iteration

1

Sensor placement guidelines needed clearer visual instructions

2

Functionality explanation required upfront education on how detection works

3

Notification timing needed more intelligent scheduling around deep work

How can this change ergonomic health in the future?

BackTech represents a practical approach to addressing a widespread problem affecting young professionals, students, and remote workers. By combining passive monitoring with active guidance, we created a system that supports ergonomic health without disrupting productivity.

Potential Impact:

  • Reduced chronic pain and discomfort from prolonged sitting

  • Improved posture awareness and long-term behavioral change

  • Enhanced productivity through better physical well-being

  • Preventative approach to musculoskeletal issues

What did this project demonstrate?

Designing for unconscious behavior is hard.

The biggest challenge wasn't the technology—it was figuring out how to make users aware of something they naturally ignore without becoming annoying. This required carefully balancing alert frequency, feedback mechanisms, and educational content.

Wearability is make-or-break.

No matter how good the technology, if people won't wear it consistently, it fails. This pushed us to prioritize comfort and aesthetics alongside functionality from day one.

Behavior change requires more than data.

Simply telling someone their posture is bad isn't enough. The guidance component—showing users what to do about it—proved essential in our testing.

Designing for unconscious behavior is hard.

The biggest challenge wasn't the technology—it was figuring out how to make users aware of something they naturally ignore without becoming annoying. This required carefully balancing alert frequency, feedback mechanisms, and educational content.

Wearability is make-or-break.

No matter how good the technology, if people won't wear it consistently, it fails. This pushed us to prioritize comfort and aesthetics alongside functionality from day one.

Behavior change requires more than data.

Simply telling someone their posture is bad isn't enough. The guidance component—showing users what to do about it—proved essential in our testing.

Want to dive deeper into our research and process?

Explore our full case study for detailed research findings, prototype iterations, and user testing results.


View Full Case Study →

Working on something innovative? I'd love to hear about it.

Working on something innovative?

I'd love to hear about it.

© 2026 — Designed with empathy, tea, and mango on my mind.

© 2026 — Designed with empathy, tea, and mango on my mind.