You have a smartphone, tablet and probably now, these days, a Fitbit or a smartwatch. Maybe you are an an early adopter or sports addict and have a sports shirt with sensors in it. All of these things, plus cameras, navigational devices, are full of sensors. All kinds of sensors and lots of sensors – somewhere between 15-20 sensors on each smartphone today.
There are sensors to detect GPS/location, the orientation of the mobile device (gyroscope), barometric sensors to assess the GPS to find altitude then there are sensors for humidity, pressure and proximity sensors, ambient light sensors, UV light sensors and motion /gesture sensors.www.forbes.com