Nowadays smartphones have in-built machines inside of them which we are not even aware of. For us, our smartphones are often a part of our everyday lives that we use for only a few selected functions and don’t even think about the other functionality packed inside them. For example, do you know that your smartphone contains sensors? And how many types of sensors do smartphones have? Let us give you some examples.
The accelerometer is used to measure the acceleration of the smartphone comparative to freefall. If it detects movement, this sensor will move but will remain still in the absence of movement. This sensor also defines a device’s coordination alongside the three axes. This information is utilized by Apps to determine if a smartphone’s orientation is portrait or landscape or if the screen is facing up- or downward.
The gyroscope also gives orientation data however with better accuracy. With the help of this sensor, Android’s Photo Sphere camera is able to articulate the degrees and direction of the phone’s rotation. You can also find out which constellation you’re looking and pointing your smartphone at by using Google’s Sky Map, which utilizes the gyroscope sensor.
One more sensor that the majority (although not every) smartphones currently possess is the magnetometer. As the name implies, the magnetometer senses magnetic fields. It is mostly employed by compass applications to identify the Earth’s North Pole. It is also used by Apps to sense metals.
Next on the list is the proximity sensor, which contains an infrared LED and IR light detector. It is strategically close to the phone earpiece so that when someone is talking on the phone, this sensor tells the system to switch off the screen light. This sensor operates by shining infrared light that is mirrored from a close body and detected by the IR detector.
A smartphone’s light sensor measures the brightness of the surroundings’ light. This data is utilized by the phone’s system to regulate the screen’s brightness spontaneously – it increases display brightness when the surrounding light is abundant, and decreases the screen brightness when the surrounding light is low. Some smartphones have added features like detecting different colors of light separately and fine-tuning images based on their brightness level.
More sophisticated smartphones contain an in-built barometer to gauge atmospheric pressure. The barometer can be used to calculate the altitude of a user above sea level which results in higher GPS precision.
A thermometer is present in every smartphone, what’s more, certain smartphones may even contain two. They are used to measure the temperature of the device and its battery. If a component is detected to be overheating, the system shuts itself down to prevent damage.
This is a sensor utilized for calculating the total steps the user takes. This information is typically acquired by the smartphone’s accelerometer, nevertheless a separate pedometer is a much more precise and battery-saving.
Fingerprint sensors are integrated into various smartphones. These scanners are most frequently utilized as an additional level of security – in the place of a lock display PIN.
Global Positioning System is considered to be a sensor too. A GPS unit will link with satellite and provide you a precise location result.
There is a sensor in the touch screen of a smartphone which reacts to human touch. A smartphone display is prepared with several films of glass and operates with the stress of the human touch.
If we add the microphone and the cameras to the above sensors, we would have at least 13 diverse sensors integrated within a smartphone. That’s a fairly large quantity of information which a smartphone is able to collect, utilize, and deliver. Plus with increasing usage and advancing technology of smartphones by the year, the list of sensors is certainly to keep on increasing.