  Mathematical models could be helpful in assisting the Indian Government's new
initiative of issuing biometric cards to its citizens. In this note, we look
into the role of mathematical models in estimating the missing, non-enumerated
population numbers, estimating annual numbers of cards required by age, gender
and regions in India. The linkage between National Population Register and
biometric cards is also highlighted. See technical Appendices. There are other
scientific issues, namely, electronic, data storage management, identity
verification etc, which we do not address in this paper.
