To verify such datas, pls group the zones to smaller zones, so that officer verifying such datas, is not overloaded so that keen involvement is ensured to its maximum
I suggest officers must be given ipad or other device ( which cannot be used for personnel work ) , so that verification cum entering data is done at the same time, and avoids duplication of work ( if from paper to computerised). Once entered data in ipad or similar device by officer, it should be connected to centralised server.
Once the officer key in the datas, it cannot be edited or over written , withOUT the approval of higher authority and with valid reasons. A personnel cross verification by high authority can be done at a later date can be done to ensure the reason for the change.
If captured and unique pin number is made compuslory many issues can be solved ( for those not with passport , unique id card is ESSENTIAL ).
It will be essential that the govt start aligning with iinernational standards of issuing passport like biometric or chip inside passport , so that Indian passports are well recognised and RESPECTED around the world more