View Single Post
  #52   Report Post  
Posted to uk.d-i-y
NY[_2_] NY[_2_] is offline
external usenet poster
Posts: 1,062
Default Escape from a locked car

"Davidm" wrote in message
On Thu, 3 Jun 2021 14:28:30 -0700 (PDT), Mathew Newton

On Thursday, 3 June 2021 at 21:21:37 UTC+1, NY wrote:
I was impressed when my wife called in an accident while we were driving
the A1 a few years ago. The emergency operator didn't need to be told
we were and said "ah yes, I can see you've just passed the turning to
Smeaton, heading north". The phone had its GPS turned on (we were
a track on Viewranger) so I wonder if the location is automatically
to the 999 operator if GPS is enabled.

Yes, it's called Advanced Mobile Location (AML). It's been supported in
the UK for a number of years now as BT (who run the first line operator
assistance centres) were one of its developers.

Google's implementation (in Android) is called Emergency Location Service
(ELS) and there's a bit of info about how it works he

It seems that it does rely on you having mobile data on your phone
turned on.
As I'm just on a payg arrangement (not even a contract) I don't
normally have it switched on, ever since on holiday one year and
loosing 40 of credit overnight when the bloody phone decided to do a
software update over a slow link (cruise ship).

No, it says it can use either HTTPS (which needs mobile data) or Data SMS
(which I'm presuming doesn't - unless *data* SMS uses a different carrier to
ordinary SMS).

It says the "Location is computed on the handset" - does this mean that GPS
must be turned on, or does it use some other technology? Maybe ELS
temporarily turns on GPS even if it is turned off in the phone's pull-down
menu of receivers (GPS, Wifi, mobile data, Bluetooth).