A systematic review of smartphone-based human activity recognition methods for health research | npj Digital Medicine
New Types of Sensors In Future Mobile Phones: Altitude, Emotion and More - MacRumors
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How does GPS work on my phone? | Android Central
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Example sensors available on smart phones | Download Scientific Diagram
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Smartphone Sensor Data Has Potential to Detect Cannabis Intoxication | Lab Manager
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How GPS Phones Work | HowStuffWorks
Accessible Smartphone GPS Navigation
How do smartphones work out what direction they are pointing?
Phones vulnerable to location tracking even when GPS services off
Using a GPS sensor to automatically find nearby stops. | Download Scientific Diagram
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How many different sensors are available inside a smartphone? - Quora
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