How smart are smart phones?

 Smart phones are a way of life for a lot of us. Often multiple smart devices. Many sensors abound to make our life better in these devices. How may sensors?

 Rotation, Orientation, Ambient Light, Motion, TouchID, Device Temperature, NFC, Microphone(s), Barometer, Ambient Temperature, Proximity, Speaker(s), Gravity, Accelerometer, Gyroscope, Magnetic field, Ambient Humidity, Ambient Pressure, GPS, Bluetooth, WiFi,  Hall Effect Sensor, Camera(s) to name a few. More sensors will be added in future smart devices.

 Why so many sensors? To add richness and capabilities to applications that run on smart devices.
 As with most things, there are benefits and not.

 Researchers have developed java script to read some of the sensors in smart phones such that the java script in applications can determine the change in spatial orientation to determine the pin entered on the touch screen.

 Will this happen to you on your smart device? Probably not. Can this happen to you? Probably.

 The warning: from anywhere on the planet, applications can use any/all of these embedded sensors to "sense and transmit" the details of the environment around these smart devices.