Censuses are extremely intensive undertakings, often involving extensive geographical coverage and significant investment. However, smaller scale surveys can also be very important, such as birth registration in rural areas.

The use of a mobile phone for this purpose helps because census surveys involve a lot of travel. A mobile phone-based system avoids the need to carry vast quantities of paper or multiple electronic devices (phone and PDA or laptop).

For surveys which take place within a limited timeframe, mobile phones are also easier to source quickly and configure remotely, minimizing downtime.