Hi Hari,
Regarding the User Location Retrivel…it is possible..and already in operational in Europe.
Even I read some where like a network is offering PARENT-CHILD Mobile Plan.Ecah other can know others location through some USSD Operation.
LOCATION Info in IN and CELL ID of BTS…can have some contribution to LOCATING TECHNOLOGY.But not clear abt How Much ?
Rgds
Scot