Positioning using GSM network

[Guest shinra]

I'm looking for applications or SDK which will perform the a/m task.

Few years ago, a local Telcom company offered a service which allows working parents to keep track of the whereabouts of their children after school as long as they're carrying a mobile phone.

I believe it works on triangulating the position of a mobile phone from the exisiting transmitting stations.

Unlike GPS which would not works indoors, this system could work anywhere within range of transmitting stations.

The closest application I can find so far is "TinyGPS" using GSM networks. (can't work on my Xphone2)

[Guest argh]

There is also the free CellTrack. It's in beta at the moment and only supports C500 (maybe other Typhoon models... not sure - you could give it a go).

There seems to be a lot of demand for support for other phones though, so if it doesn't, it may in the near future.