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It's also used for emergency phone calls. When 911 calls are made, the barometric pressure is also relayed to give the emergency operators an idea of how high
by kobayashi 11y ago
It's also used for emergency phone calls. When 911 calls are made, the barometric pressure is also relayed to give the emergency operators an idea of how high someone is, which is especially useful if the call is made from inside a building.
- Falcon9 11y agoIs it really? That's awesome.
- kobayashi 11y agoIndeed, it really is.
- krzyk 11y agoHow does it work? Isn't 911 just a voice call?
- cryptoz 11y agoE911, or Enhanced 911, is much more than just a voice call. For some time, E911 calls have sent sensor data from smartphones to the 911 dispatch, such as latitude and longitude. Soon, the FCC is going to mandate all barometer-carrying smartphones to send the barometric pressure when an E911 call is made. https://apps.fcc.gov/edocs_public/attachmatch/FCC-15-9A1.pdf https://apps.fcc.gov/edocs_public/attachmatch/FCC-15-9A1.pdf
- sbierwagen 11y agoWhat, really? I would figure GPS coords+altitude would be more useful than raw barometric pressure.
- kobayashi 11y agoBelow is the FCC hearing on the matter. The barometric pressure is used to determine the altitude. https://apps.fcc.gov/edocs_public/attachmatch/FCC-15-9A1.pdf https://apps.fcc.gov/edocs_public/attachmatch/FCC-15-9A1.pdf