I thought it wasn't telephony that you wanted, but an app like
familyorbit.com. I don't know exactly how it detects the location of the call, but it works fine. That's how I found out that my brother has credit debt, and that's when he called me and tried to talk to me about something. The app immediately brought up the data. Awesome. The program is a global phone book. If there is an incoming number in the utility's database, it will immediately identify the caller. My understanding is that it compares the numbers added to contacts in its database. Basically, this database contains numbers of government organizations, online stores, online services and banks. Contacts are collected from all over the world.
