Barometric pressure sensors are being integrated into premium and mainstream smartphones, as well as wearables and Internet of Things (IoT) devices, to measure air pressure. These sensors have a number of uses, including providing accurate altitude information.

Key applications of barometric pressure sensors include:

* Indoor Navigation: Because GPS signals are often blocked inside buildings, pressure sensors can be combined with accelerometers to create a three-dimensional navigation matrix. This technology can help people navigate shopping malls and underground parking garages. It is also essential for emergency services to accurately identify a 911 caller's location inside a large building, and the FCC has updated its E911 rules to mandate that a caller's indoor location be automatically transmitted to first responders.

* G ...