The #Nexus 6 has a string of #sensors: #GPS, #Accelerometer, #Gyroscope, #Magnetometer, Ambient light sensor, and #Barometer. There's two on that list that have me a little confused on their use, the magnetometer and barometer. Any one have and idea for there use? And by the way, I really did do a search through past threads w/any info before I posted so if I'm duplicating, I'm sorry. Thanks.