3 ms·

I must be missing something, https://en.wikipedia.org/wiki/Enhanced_9-1-1 https://en.wikipedia.org/wiki/Enhanced_9-1-1 Hasn't 911 location been shared via gps

I must be missing something, https://en.wikipedia.org/wiki/Enhanced_9-1-1 https://en.wikipedia.org/wiki/Enhanced_9-1-1 Hasn't 911 location been shared via gps location in pretty much every cellphone for the past decade? I remember shitty verizon kyocera clamshells advertising gps for 911 in like 2004.

jaxbot 8y ago
No. It's possible that this information has been available, but the connection to the end operator depends on local, non-standard setups. I once called 911 to report a passed out individual in Central Park. I tried relaying landmarks, lamp post #s, etc. Eventually it turns out the operator needed "5th and 80th, but in the park" to clear their prompt and dispatch an ambulance. This is on a relatively new dispatch system, too, that for some reason doesn't support GPS coordinates.
scrooched_moose 8y ago
The accuracy and timing requirements are terrible and still use some combination of radio location and raw cellular data. Some extracts from the article you linked: > Wireless network operators must provide the latitude and longitude of callers within 300 meters, within six minutes of a request by a PSAP. > Code division multiple access (CDMA) networks tend to use handset-based radiolocation technologies, which are technically more similar to radionavigation. > Mobile phone users may also have a selection to permit location information to be sent to non-emergency phone numbers or data networks, so that it can help people who are simply lost or want other location-based services. Presumably Apple is going to share their Wifi-assisted data instead of raw GPS signal or radiolocation data. Looking at my location in a dense urban zone, 300m would narrow my location down to roughly 300 houses. Good enough to get emergency services on the way, not nearly good enough to render assistance if the caller can't speak/doesn't know where they are.

jaxbot 8y ago

No. It's possible that this information has been available, but the connection to the end operator depends on local, non-standard setups. I once called 911 to report a passed out individual in Central Park. I tried relaying landmarks, lamp post #s, etc. Eventually it turns out the operator needed "5th and 80th, but in the park" to clear their prompt and dispatch an ambulance. This is on a relatively new dispatch system, too, that for some reason doesn't support GPS coordinates.

scrooched_moose 8y ago

The accuracy and timing requirements are terrible and still use some combination of radio location and raw cellular data. Some extracts from the article you linked: > Wireless network operators must provide the latitude and longitude of callers within 300 meters, within six minutes of a request by a PSAP. > Code division multiple access (CDMA) networks tend to use handset-based radiolocation technologies, which are technically more similar to radionavigation. > Mobile phone users may also have a selection to permit location information to be sent to non-emergency phone numbers or data networks, so that it can help people who are simply lost or want other location-based services. Presumably Apple is going to share their Wifi-assisted data instead of raw GPS signal or radiolocation data. Looking at my location in a dense urban zone, 300m would narrow my location down to roughly 300 houses. Good enough to get emergency services on the way, not nearly good enough to render assistance if the caller can't speak/doesn't know where they are.