[LINK] No cash for phone alert system

[Stilgherrian]

On 16/02/2009, at 1:29 PM, Jan Whitaker wrote:
> Well, could also be a case of registration for 'I have property in xx
> area and want to know if anything is going to happen there.' So what
> if there are 'false' calls if the person isn't in the area at the
> time. Also there may be people who work in the area who would be
> worth being advised.
>
> I was told by someone who sorta knows stuff that our GSM phones have
> something specific in the signalling that was required and could be
> used. He went a bit too technical on me, so I can't remember the
> specifics of it. But he seemed to think it was all there in the
> mobiles just waiting to be used.

Indeed. I seem to recall that there's a "broadcast SMS to all phones  
on the cell" function. Oddly enough, I'm not in the frame of mind to  
start digging out mobile phone tech specs today. ;)

Stil



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