"It was found that a number of teachers either report late to school or mark their attendance and leave for the day. Through this biometric system attendance such things can be checked," said Mahender Nagpal, chairman of the Education Committee of the MCD.
From the MCD homepage:
The Municipal Corporation of Delhi is among the largest municipal bodies in the world providing civic services to more than estimated population of 13.78 million citizens in the capital city. It is next only to Tokyo in terms of area. Within its jurisdiction are some of the most densely populated areas in the world. It has also the unique distinction of providing civic services to rural and urban villages, Resettlement Colonies, regularised unauthorised colonies, JJ Squatter Settlements, slum 'basties, private 'katras' etc.