Microelectromechanical systems (or MEMS) barometers are extremely small devices between 1 and 100 micrometers in size (ie 0.001 to 0.1 mm). They are created via photolithography or photochemical machining . Typical applications include miniaturized weather stations, electronic barometers and altimeters. [17]
A barometer can also be found in smartphones such as the Samsung Galaxy Nexus , [18] Samsung Galaxy S3-S6, Motorola Xoom, Apple iPhone 6 smartphones, and Timex Expedition WS4smartwatch , based on MEMS and piezoresistive pressure-sensing technologies. [19][20] Inclusion of barometers on smartphones was originally intended to provide a fasterGPS lock. [21] However, third party researchers were unable to confirm additional GPS accuracy or lock speed due to barometric readings. The suggest researchers that the inclusion of barometers in smartphones may provide a solution to determining a user's elevation, but also suggest that several pitfalls must first be overcome. [22]
