1. Apple Watch™, Android Wear™,
Microsoft Band™, and other
Wrist-based Sensor Platforms
Prepared for Personal Analytics Meetup
By Gene Leybzon, Oct 2014

2. Anatomy of the wrist-based
wearables

3. Components of the smart watch
Sensors
Display
Processor
Battery
Data memory
RF (BT or BTLE)
USB + power connector

4. Accelerometer
Gyroscope
Compass
Heart Rate
Ambient Light
Altimeter
GPS
Blood Oxygen
Sensors
(in watches currently shipped)

5. Sensors and Applications
Accelerometer,
Gyroscope,
Compass
Track physical
activity
Fall detection
Step counter
Calories burn
Sleep quality
Heart Rate
Cardio
Fitness level
Gym
Heart problem
warning
Ambient Light
Sleep quality
UV exposure
Altimeter,
GPS
Physical
activity tracker
Fitness
Calories
Blood Oxygen
Respiratory
function check
Fitness
Anesthetic
monitor
Hiking

6. Apple Watch
Sensors:
• Accelerometer
• Gyroscope
• Heart Rate Monitor (optical)
Watch Kit

7. Samsung Gear 2
Sensors:
• Accelerometer
• Gyroscope
• Heart Rate Monitor (optical)

8. Motorola Moto 360
Sensors:
• Accelerometer
• Heart Rate Monitor (optical)

9. LG Watch R
Sensors:
• Gyro
• Accelerometer
• Compass
• Heart rate monitor
• Barometer

10. Pebble Steel
Sensors:
• 3d Accelerometer
• Compass
• Light Sensor
Pebble SDK

11. Microsoft Band
Sensors:
• Optical heart rate sensor
• 3-axis accelerometer/gyro
• Gyrometer
• GPS
• Ambient light sensor
• Skin temperature sensor
• UV sensor
• Capacitive sensor
• Galvanic skin response
• Microphone

12. Access to Sensor Data
Watch Kit
✚
✚
Google Fit

13. Data flow for Apple Watch
(to the Health Kit Data Store)
Sensors
Sensor
Adapters
Health
Kit API

14. Data flow from sensor to Fitness
Store
Sensors
Sensor
Adapters
Fitness
Recording
API

15. Data flow from sensor to HealthVault

16. Summary
 Smart watch is a great platform for wearable apps
 Smart watches are very different in terms of sensors
and capabilities
 Apple and Android are two separate universes
 Android software tools are ready today
 Apple Watch Kit will be generally available at least
one month before Apple Watch launch