Dear Author, The collection of bio-metrics is more than a century old practice. Doing it digitally does not create a caste system. Kindly keep your stupid wisdom to yourself that finger prints or iris recording determines caste. It reflects your intellectual bankruptcy. The human anatomy has few prominent openings. One of them is the mouth on the front side and the asshole on the posterior side. There seems to be a malfunction in your case as is evident from your writings - PhD acronym can also mean Permanent Head Damage.
I find that Indians always complain of privacy and the like.What about the US,we,the people ?I think in US also they collect such information for safety and security of the country.Why don't they complain about privacy leackage?