Cardiact Arrest Monitoring Using IoT

Cardiact Arrest Monitoring Using IoT

Cardiact Arrest Monitoring Using IoT

UX Case Study & Product Design

UX Case Study & Product Design

UX Case Study & Product Design

Role: UI/UX Designer (cross-functional collaboration in research, design, and development)
Organization: IBM – Academic Collaboration, India
Duration: Aug 2022 – Dec 2022
Tools: Figma, IBM Cloud, Python, IBM Cognos, HTML/CSS
Team: 4 members – cross-functional (UX, Development, Data Science)
Team ID: PNT2022TMID01272

Redesign: Independent redesign completed in 2025

Role: UI/UX Designer (cross-functional collaboration in research, design, and development)
Organization: IBM – Academic Collaboration, India
Duration: Aug 2022 – Dec 2022
Tools: Figma, IBM Cloud, Python, IBM Cognos, HTML/CSS
Team: 4 members – cross-functional (UX, Development, Data Science)
Team ID: PNT2022TMID01272

Redesign: Independent redesign completed in 2025

Role: UI/UX Designer (cross-functional collaboration in research, design, and development)
Organization: IBM – Academic Collaboration, India
Duration: Aug 2022 – Dec 2022
Tools: Figma, IBM Cloud, Python, IBM Cognos, HTML/CSS
Team: 4 members – cross-functional (UX, Development, Data Science)
Team ID: PNT2022TMID01272

Redesign: Independent redesign completed in 2025

What started as an academic project on cardiac arrest detection turned into something more personal. Our original smartwatch-based system got published in IEEE for its tech but it didn’t feel right for the people it was meant to help. So I pivoted. I redesigned it as a standalone wearable, rooted in real user needs and accessibility.

What started as an academic project on cardiac arrest detection turned into something more personal. Our original smartwatch-based system got published in IEEE for its tech but it didn’t feel right for the people it was meant to help. So I pivoted. I redesigned it as a standalone wearable, rooted in real user needs and accessibility.

What started as an academic project on cardiac arrest detection turned into something more personal. Our original smartwatch-based system got published in IEEE for its tech but it didn’t feel right for the people it was meant to help. So I pivoted. I redesigned it as a standalone wearable, rooted in real user needs and accessibility.

From research prototype to real-world redesign

From research prototype to real-world redesign

From research prototype to real-world redesign

This project started off in a very academic space. A technical prototype using IoT for cardiac arrest detection. It got published through IEEE and worked great on paper.

But something didn’t sit right with me.


The design was meant to help elderly patients in rural India. And yet… it relied on smartwatches. In places where digital literacy is low and smart tech feels alien, how helpful was that, really?


So I pivoted.


I reimagined the device from the ground up, not for the tech, but for the people. The result? A standalone wearable built around habit, simplicity, and accessibility.

This project started off in a very academic space. A technical prototype using IoT for cardiac arrest detection. It got published through IEEE and worked great on paper.

But something didn’t sit right with me.


The design was meant to help elderly patients in rural India. And yet… it relied on smartwatches. In places where digital literacy is low and smart tech feels alien, how helpful was that, really?


So I pivoted.


I reimagined the device from the ground up, not for the tech, but for the people. The result? A standalone wearable built around habit, simplicity, and accessibility.

This project started off in a very academic space. A technical prototype using IoT for cardiac arrest detection. It got published through IEEE and worked great on paper.

But something didn’t sit right with me.


The design was meant to help elderly patients in rural India. And yet… it relied on smartwatches. In places where digital literacy is low and smart tech feels alien, how helpful was that, really?


So I pivoted.


I reimagined the device from the ground up, not for the tech, but for the people. The result? A standalone wearable built around habit, simplicity, and accessibility.

Designing for Real People

Designing for Real People

Designing for Real People

I spent time understanding how elderly users actually interact with health tech or more accurately, how they avoid it.


The insight was clear: less screen, more intuition. So I built around habits they already have like clipping on a watch strap.

I spent time understanding how elderly users actually interact with health tech or more accurately, how they avoid it.


The insight was clear: less screen, more intuition. So I built around habits they already have like clipping on a watch strap.

I spent time understanding how elderly users actually interact with health tech or more accurately, how they avoid it.


The insight was clear: less screen, more intuition. So I built around habits they already have like clipping on a watch strap.

Designing for trust, clarity, and urgency

Designing for trust, clarity, and urgency

Designing for trust, clarity, and urgency

I reimagined the hardware using the components we had already prototyped

I reimagined the hardware using the components we had already prototyped

I reimagined the hardware using the components we had already prototyped

...could we design a cardiac device so intuitive it disappears into routine, until the moment it matters?

...could we design a cardiac device so intuitive it disappears into routine, until the moment it matters?

...could we design a cardiac device so intuitive it disappears into routine, until the moment it matters?

Designing for Behavior, Not Features

Designing for Behavior, Not Features

Designing for Behavior, Not Features

The new direction focused on blending the device into routines rather than asking users to adopt something foreign. Instead of a smartwatch, I designed a clip-on module that could attach to any mesh strap.

The new direction focused on blending the device into routines rather than asking users to adopt something foreign. Instead of a smartwatch, I designed a clip-on module that could attach to any mesh strap.

The new direction focused on blending the device into routines rather than asking users to adopt something foreign. Instead of a smartwatch, I designed a clip-on module that could attach to any mesh strap.

Rethinking the Charging Experience

Rethinking the Charging Experience

Rethinking the Charging Experience

To make the charging experience intuitive, I used indicator lights to communicate charging status. Early on, I considered placing a charging port directly into the mesh strap. But as I tested that idea, it quickly became clear that it would add unnecessary bulk. It didn’t feel right not for the wrist, and not for the experience I wanted to create.


Aesthetically, it disrupted the minimal, familiar feel of the device. Functionally, it added complexity for users who already needed simplicity.


So I stepped back and rethought it. Instead of building the port into the strap, I created a separate charging case. One that was compact, easy to handle, and clear in its communication, designed entirely around the user's comfort, design preferences, and daily routine.

To make the charging experience intuitive, I used indicator lights to communicate charging status. Early on, I considered placing a charging port directly into the mesh strap. But as I tested that idea, it quickly became clear that it would add unnecessary bulk. It didn’t feel right not for the wrist, and not for the experience I wanted to create.


Aesthetically, it disrupted the minimal, familiar feel of the device. Functionally, it added complexity for users who already needed simplicity.


So I stepped back and rethought it. Instead of building the port into the strap, I created a separate charging case. One that was compact, easy to handle, and clear in its communication, designed entirely around the user's comfort, design preferences, and daily routine.

To make the charging experience intuitive, I used indicator lights to communicate charging status. Early on, I considered placing a charging port directly into the mesh strap. But as I tested that idea, it quickly became clear that it would add unnecessary bulk. It didn’t feel right not for the wrist, and not for the experience I wanted to create.


Aesthetically, it disrupted the minimal, familiar feel of the device. Functionally, it added complexity for users who already needed simplicity.


So I stepped back and rethought it. Instead of building the port into the strap, I created a separate charging case. One that was compact, easy to handle, and clear in its communication, designed entirely around the user's comfort, design preferences, and daily routine.

Prototyping with purpose

Prototyping with purpose

Prototyping with purpose

This wasn’t just a UI or visual exercise, it was full-stack design. I built the hardware, programmed the controller, wired up sensors, and tested trigger conditions using real ECG input ranges. I also sketched product blueprints and storyboarded usage flows to align engineering with UX vision.

This wasn’t just a UI or visual exercise, it was full-stack design. I built the hardware, programmed the controller, wired up sensors, and tested trigger conditions using real ECG input ranges. I also sketched product blueprints and storyboarded usage flows to align engineering with UX vision.

This wasn’t just a UI or visual exercise, it was full-stack design. I built the hardware, programmed the controller, wired up sensors, and tested trigger conditions using real ECG input ranges. I also sketched product blueprints and storyboarded usage flows to align engineering with UX vision.

Final Design

Final Design

Final Design

The final product looks nothing like the academic prototype — and that’s the point. It doesn’t resemble a piece of advanced tech. It doesn’t advertise its function. It just sits quietly on the wrist, doing its job.


It monitors. It alerts. It protects.


The device is now standalone, fully wearable, and completely screenless. It’s GPS-enabled, with a buzzer for urgent alerts. It clips to any watch strap. It charges via a portable case with soft light indicators. And above all, it feels like something designed for the people who’ll actually wear it.

The final product looks nothing like the academic prototype — and that’s the point. It doesn’t resemble a piece of advanced tech. It doesn’t advertise its function. It just sits quietly on the wrist, doing its job.


It monitors. It alerts. It protects.


The device is now standalone, fully wearable, and completely screenless. It’s GPS-enabled, with a buzzer for urgent alerts. It clips to any watch strap. It charges via a portable case with soft light indicators. And above all, it feels like something designed for the people who’ll actually wear it.

The final product looks nothing like the academic prototype — and that’s the point. It doesn’t resemble a piece of advanced tech. It doesn’t advertise its function. It just sits quietly on the wrist, doing its job.


It monitors. It alerts. It protects.


The device is now standalone, fully wearable, and completely screenless. It’s GPS-enabled, with a buzzer for urgent alerts. It clips to any watch strap. It charges via a portable case with soft light indicators. And above all, it feels like something designed for the people who’ll actually wear it.

Turning insight into impact

Turning insight into impact

Turning insight into impact

This project reminded me why I design. The original model proved something to the research community but the redesign meant something to the users.


In shifting from prototype to product, I learned that true usability starts not with interaction patterns or interface details, but with empathy. The best interface in the world means nothing if it makes the user feel small or unsure. What mattered here wasn’t sleekness or innovation, it was comfort, intuition, and peace of mind.


This wasn’t a story about detecting cardiac arrest anymore. It became a story about restoring control. About creating something that fits into a person’s life without disrupting it. Something that lets them live, knowing they’re being looked after quietly, gently, without fanfare.


And for me, that’s what real design looks like.

This project reminded me why I design. The original model proved something to the research community but the redesign meant something to the users.


In shifting from prototype to product, I learned that true usability starts not with interaction patterns or interface details, but with empathy. The best interface in the world means nothing if it makes the user feel small or unsure. What mattered here wasn’t sleekness or innovation, it was comfort, intuition, and peace of mind.


This wasn’t a story about detecting cardiac arrest anymore. It became a story about restoring control. About creating something that fits into a person’s life without disrupting it. Something that lets them live, knowing they’re being looked after quietly, gently, without fanfare.


And for me, that’s what real design looks like.

This project reminded me why I design. The original model proved something to the research community but the redesign meant something to the users.


In shifting from prototype to product, I learned that true usability starts not with interaction patterns or interface details, but with empathy. The best interface in the world means nothing if it makes the user feel small or unsure. What mattered here wasn’t sleekness or innovation, it was comfort, intuition, and peace of mind.


This wasn’t a story about detecting cardiac arrest anymore. It became a story about restoring control. About creating something that fits into a person’s life without disrupting it. Something that lets them live, knowing they’re being looked after quietly, gently, without fanfare.


And for me, that’s what real design looks like.

Copyright

© 2025 Harita Kancheepuram Sundararajan

Let’s Create Something Amazing together, say hello anytime!

Let’s Create Something Amazing together, say hello anytime!

Let’s Create Something Amazing together, say hello anytime!