Census collectors can also get SMS requests for additional forms and if they are in a poor coverage area there is a backup voicemail system.

"It's a really exciting project for us and we hope the public takes it up and enjoys the benefit," Clark said.

The eCensus project is now online at www.census.abs.gov.au (http://www.census.abs.gov.au).

Technology behind the $9 million eCensus project

The ABS entered into a A$9 million contract with IBM in early 2005 to develop eCensus allowing people to complete it online for the first time.