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AboutTinkering
Teri Shim
태희
Tae · hee
Born name
KR
37.5°N · 126.9°E
RoleProduct Designer
Emailttshim@usc.edu
Lilinkedin.com/in/teri-shim
CVrésumé ↗
Based in Los Angeles
Oasis
Co-Founder, Product Designer
01 context
02 problem
03 research
04 solution
05 iterations
06 why now + result
Team
2 Engineers, 1 PM
Timeline
Spring 2025, 10 Weeks
Tools
Figma, FigJam
Oasis · In-Home Monitoring · Spring 2025

Co-Founding and Designing 0 to 1 an In-Home Monitoring System for Older Adults to Prevent Tragedies From Becoming Emergencies

01 — Context

Co-founder first, designer second.

Part of a 10-week startup incubator with 2 devs and a PM. We pitched every week, new idea, new slides, hundreds of user interviews and scrapped ideas. Super fun to be that scrappy and messy.

oasis — product overview

02 — Problem

What if they fall? What if they choke? What if, what if, what if…

Younger family members spend a lot of time worrying about older loved ones who live on their own. To monitor them, families have to watch 24/7, causing constant stress and anxiety.

Wearable devices get forgotten or left on the nightstand
Baby monitors require someone watching 24/7
Caregivers help, but take away the very independence older adults are trying to protect

So we designed a vision-based in-home monitoring system that can detect falls and other emergency situations, to help older adults maintain their autonomy while providing peace of mind for their loved ones.

existing solutions comparison

03 — Research

Older adults want to maintain their autonomy and privacy, but that causes a lot of worries for families.

4
participants (workshop)
22
user interviews
40+
articles
121
raw data points

Visited a senior center. Interviewed in English and Korean.

Two findings shaped everything
01

Autonomy is one of the most important priorities for older adults age 60-70. Any solution that visibly compromises independence will be rejected, regardless of how well it works.

02

Current solutions like wearables or caregivers cause friction. Most forget to wear them or find them uncomfortable. Caregivers infringe on independence.

User story

Jasmita's grandma wants to continue to live alone, but her health is deteriorating. She was recently diagnosed with a neurodegenerative disease. They set up baby monitors but those need to be watched 24/7, which means Jasmita's parents are constantly worried. This is where Oasis steps in…

user interview process

(1/2)

04 — Solution

An in-home camera monitoring system that uses computer vision to detect falls, signs of unresponsiveness, and choking in real-time.

Multiple cameras cover danger zones around the house, connecting to a central node that processes the visual data to determine if an incident happened.

Caregiver app:
1.Check for incidents
2.Set up 911 auto-calls
3.Check for errors or camera precision
4.Send loving reminders and messages
Older adult side:
1.Set up privacy mode
2.Deactivate false alarms
3.Receive happy messages from loved ones and send some back

caregiver app — incident view

(1/3)

05 — Iterations

Sat down with older adults to workshop the product. Here's the feedback.

Iteration 1
Before

Designed the older adult interface to be on the companion app on a phone.

After

Many older adults don't have a phone or don't keep it close to them. Added all important uses to the physical hardware. If an older adult prefers the companion app, they can still use it.

before — phone interface

(1/2)

Iteration 2
Before

Added a small screen on the camera box to display messages from family.

After

The small message wasn't something anyone would really notice. Changed to soft lights instead. Tried sound first but it scared some people, so erred on the side of aesthetic. Light is calm, ambient, and doesn't startle.

before — screen on device

(1/2)

06 — Why Now + Result

In-home camera monitors that detect falls have existed, except they're way too expensive.

With recent advancements in computer vision and processing, algorithms are now much more accurate and can detect incidents in real-time, on-device.

$500
per year
existing solutions
$500
all-time
Oasis

cost comparison + tech landscape

Result

Shipped my first product!

Key takeaways
01/02

"Understanding a user" is just a buzzword for listening to someone tell their story. My interviews yielded a lot more when I treated them like actual conversations — just trying to learn as much as I could, being as curious as possible, going deep.

02/02

Designing for hardware is genuinely different from software. Having a hardware interface meant I could think beyond text, using sound, light, and color as ways of communicating. Other forms of interfacing entirely.

Next
Guardian