Sensors used for scientific purposes run the gamut from motion tracking to pressure sensors, from inertial measurement units to those created specifically for seismic monitoring. Following are just a few sensors that are representative of those used to measure and even predict when a powerful volcano will erupt.
Medical researchers have developed a nanoparticle-based sensor, an 'electronic nose,' that can successfully discriminate between exhaled breath collected from control subjects and those with ovarian cancer, with data from a single sensor being sufficient to obtain 82% accuracy, irrespective of important confounding factors, such as tobacco consumption and comorbidities.
Using Biometric Sensing to Verify Identity: Available methods of identification include fingerprint analysis, facial recognition, unique iris pattern identifiers, and more. There is a comprehensive portfolio of biometric ID technologies available to engineers, with others, still on the drawing board, that provide varying degrees of authentication and carry an equally large variety of price tags.
Magnetic sensors are traditionally used for speed, rotational speed, linear position, linear angle, and position measurement in automotive, industrial, and consumer applications. In particular, the automotive sector has emerged as the global market leader for magnetic field sensors, accounting, and according to some estimates, for more than 40 percent of the total magnetic-field-sensor market.
Wow ! I've read an article where we can use our skin as a touchscreen for our smartphone. There is no need to use the device. We can just wear the device to our skin talk and text accordingly without any trouble or any itching sensation to the skin. Some doctors are saying that it might cause cancer but thorough investigation was performed in the lab and decided it is not a cancer causing agent. The article did not mention about the audio. That might become a intelligent question.