So a paper studying this website is really studying – the successes (less corruption) and the failures (exclusion of the poorest due to tech glitches).
Researchers found that the website (and its underlying database) could potentially leak information. By just knowing a person's ration card number (which is often written on household items or shared with shopkeepers), one might access: www.tnpds.gov.in ration card
Note: Always check the official website for the most recent updates regarding eligibility criteria and government orders, as subsidy rules may change. So a paper studying this website is really
Tamil Nadu issues Smart Ration Cards with distinct categories based on the economic status and eligibility of the family: www.tnpds.gov.in ration card