Checking smart watch

Medical Wearable for Independent Living

A compact wearable combining medication adherence, fall detection, and emergency response
Back to Case Studies
Digital Ecosystems
Text

Medication non-adherence affects roughly 50% of elderly patients with chronic conditions — driving hospitalizations, eroding independence, and straining caregivers. Our client came to M7 with a vision for a wearable that could address all of it in a single device. The opportunity was significant. So was the complexity.

Connected Devices

3-in-1

Core Capabilities in One Device

Battery

48hr+

Battery Life

Thumb

Comfort

For All Day Wearability

Text

The Challenge

One device.
Three problems to solve.

The goal was a single wearable capable of medication reminders, fall detection, and emergency calling — designed specifically for elderly users, and built to support independent living. Every component decision and every interaction had to be made with a non-technical user in mind.

Complex

01 · ADHERENCE

Missed medications

~50% of elderly and chronically ill patients don't take medications as prescribed, leading to hospitalizations and poor outcomes that are largely preventable.

02 · Safety

Falls without response

Falls are a leading cause of injury for people over 65. Detection needs to be reliable and automatic — a user in crisis can't be expected to self-report.

 

03 · Form Factor

Clinical without stigma

The device needed discreet, non-medical aesthetics — comfortable for all-day wear, operable without instruction, and nothing like traditional medical alert hardware

Text
Our Approach

Constraints first.
Design tools second.

We mapped the real constraints before touching any design tools. Processor selection, wireless connectivity, power envelope, and sensor accuracy all had downstream effects on each other.

We engaged directly with chipset manufacturers and their development partners early — to understand support options and avoid integration surprises downstream. Nothing was specced on assumption.

Whiteboard
Text

Hardware Architecture

Every component chosen deliberately.

Sensor selection went through multiple rounds of rigorous comparison across accuracy, power draw, size, availability, and cost. Pressure sensing, wireless charging, and antenna design each got the same treatment.

32mm

Form Factor

32–35mm × 17–25mm × 10–11mm. Custom PCB and ~1mm wall thickness to achieve a discreet, wearable profile.

IPX7

Water Resistance

Waterproof to 1 meter for 30 minutes. Durable enough for daily wear including bathing and hand-washing.

350mAh

Battery

Custom lithium-polymer cell. Cellular reserved for emergencies; BT/WiFi cycles ~12× daily to hit 48hr+ life.

 

8 LEDs

Status Display

APA102-2020 addressable LEDs provide medication status, battery level, message indicators, and mute state — no screen required.

Text

What Are We Packing Into this Mico Device?

LTE-M Cellular + VoLTE

Emergency calls connect directly to a response center via cellular — no phone required. Two-way voice, GPS location transmitted simultaneously.

6-Axis IMU — Fall Detection

3-axis accelerometer + 3-axis gyroscope with algorithmic fall detection in Phase 2, upgraded to AI-based detection in Phase 3 (≥95% accuracy target).

NFC / RFID Medication Verification

User scans RFID tag on medication packaging to confirm correct dose. Device logs adherence to cloud; alerts caregiver on missed doses.

GPS Location Tracking

Transmits location data during emergency events. Integrated into cellular module for compact form factor.

Edge AI Co-Processor

Dedicated AI chip handles voice recognition, fall detection inference, and edge compute tasks without cloud round-trips.

Haptic + Audio + LED Alerts

Triple-modality notifications: linear actuator haptic, CMS speaker audio, and LED visual — ensuring alerts reach users regardless of environment.

Pulse Oximeter

Detects whether the device is being worn and provides continuous monitoring data for caregiver and health platform visibility.

Wireless Charging

Inductive charging eliminates port connectors — reducing failure points and simplifying daily use for elderly users.

Text

Industrial Design

Compact. Discreet. Clinical-grade.

The device body measures just 32–35mm and sits flush on the wrist. No screens. No buttons to misread. A design that disappears into daily life.

Industrial Design
Text

UX for Real Users

Simple enough to operate without instruction.

This wasn't a consumer wellness gadget for the tech-savvy. Every interaction was designed with an elderly user in mind — tap-based controls, voice commands, and multimodal feedback ensure the device communicates clearly even when a user can't see a screen or read small text.

Hardware and UX decisions were made in parallel, not sequence. The sensor choices affected the feature set. The form factor affected the interaction model. Holding all of that simultaneously is what made the difference.

Text

The Outcome

Hardware and software as a single discipline.

This engagement succeeded because we refused to treat hardware and software as separate workstreams. The PCB decisions affected the UX. The sensor choices affected the feature set. That integration — the willingness to slow down and get component selection right — is what M7 is built for.

Complete System Architecture

Hardware, firmware, cloud platform, and companion app designed as a unified system — not assembled from independent workstreams.

Cellular Emergency Response

LTE-M VoLTE connection to a response center in ≤5 seconds, with simultaneous GPS transmission — no smartphone required

AI-Powered Fall Detection

Algorithmic detection in Phase 2, upgraded to an AI-based model targeting ≥95% accuracy by production release in Q1 2026.

RFID Medication Adherence

Scan-to-confirm medication verification with ≥99% RFID success rate, caregiver alerts, and cloud adherence logging.

48hr+ Battery in 350mAh

Cellular reserved for emergencies. Bluetooth and WiFi cycle efficiently. Custom power envelope achieved in a sub-35mm body.

Regulatory-Ready

FCC / CE / carrier certification process initiated early. HIPAA-compliant data handling. IPX7 water resistance validated.