Have your heard about truecaller mobile app?
Essentially, it is phone book manager app on nearly all mobile
platforms including iOS, Android, Blackberry, Nokia & Windows. When
the mobile user installs the app, all their phone book contacts are
pulled to the centralized server. The app’s database, essentially, is a
giant, collective phone book.Truecaller then allows users to search for the user based on his / her mobile number. According to a report in ET, mobile numbers of nearly every Indian Cabinet minister, heads of intelligence agencies such as the Intelligence Bureau and Department of Revenue Intelligence, and CEOs of India’s largest companies are all on the database.
