Biometric verification schemes are insecure as well as they are susceptible to spoofing attacks. USB tokens and hardware keys have a risk of being lost.
Unfortunately, frequently used authentication schemes for protecting smart devices (such as passwords, PINs, and pattern locks) are vulnerable to many attacks. However, there is a possible risk of unauthorized access to these devices and technologies. The Geiger Counter in it can measure the current radiation level in the area.The continuous advancement in the Internet of Things technology allows people to connect anywhere at any time, thus showing great potential in technology like smart devices (including smartphones and wearable devices). This handset has been released in Japan only. In fact, there is only one phone that supports it – the Sharp Pantone 5. Now, this is one smartphone sensor that you should not expect to find in common devices. But again, this type of sensor is used by selected handsets only. It could measure the humidity in the air, and the data collected by it would tell the user whether the given air temperature and humidity are optimum or not. S4 was the first smartphone to incorporate an air humidity sensor. Now that we are talking about Galaxy S4 let’s discuss the Air Humidity sensor as well. Such thermometer sensors can be used by apps to detect your room temperature. However, some handsets come with additional thermometers to measure ambient temperature. If you can recall, the Samsung Galaxy S4 bragged of thermometer that can measure temperature. In case a component starts overheating, the system shuts down itself to prevent any damage.
ThermometerĮvery smartphone comes with an inbuilt thermometer for monitoring the temperature inside the device and battery. Many fitness and health apps use this method to calculate the heart rate. The heartbeat is measured by counting the changes in light intensity between the minute pulsations of the blood vessels. There is a difference in the light intensity when there is a pulse. In short, it measures the varying distances and pattern between the ridges on the surface of your finger. This smartphone sensor is quite useful in apps that require authentication such as mobile payment apps. When you put your finger on its surface, the ridges in your fingerprints touch the surface whereas the hollows between the ridges have a slight separation. It is a capacitive scanner that records your fingerprint electrically. Gone are the days of memorizing passwords and patterns to unlock your phone as many users prefer using the fingerprint scanner these days. Fingerprint sensor enables biometric verification to secure many smartphones today. But nowadays, the capacitive screen is used in almost all smartphones. Before Apple introduced the capacitive touchscreen, resistive screens were used in the display. This change acts as input for the device. The smartphone sensors in a touchscreen have an electrical current passing through them at all times and touching the screen causes a change in the signals. While there are different types of microphone sensors available, smartphones generally use micro-sized electret microphones.Īpart from making and receiving calls, it is used for voice search and voice commands for digital assistant apps like Google Assistant, Siri, Cortana, etc. The microphone is basically a sound sensor that detects and measures the loudness of sound. It is used in Automatic Brightness Adjuster to decrease or increase the brightness of the smartphone screen based on the availability of light. The light sensor detects the lighting levels in the vicinity to adjust the display brightness accordingly. It used while making calls and when the phone is held to the face to make or receive a call, the sensor detects it and disables the touchscreen display to avoid unintended input through the skin. A proximity sensor makes use of an infrared LED and IR light detector to find out how close the phone is to an outside object.