NIMC acting director general, Abisoye Coker-Odusote, gave the assurance in a statement on Monday in Abuja.
The federal government says Nigerians can now ask their banks to issue them a debit card that doubles as their national identity card at no extra cost.
He also said that the essence of the registration was to have the full statistics of unemployed persons across the country.
They argued that the timing of the census scheduled for May 3, a few weeks before the end of the current administration, was not good enough.
Mr Adegoke said the NIMC devised the framework with the Nigerian Immigration Service (NIS) to improve passport services through the timely verification of NIN.
The federal commissioner in charge of Ebonyi, Darlington Okereke, stated this at a news conference on the training of the participants on Wednesday in Abakaliki.
The voters, especially new registrants, thronged designated INEC offices on Tuesday and in the early hours of Wednesday in large numbers.
The public banker said the so-called cash swap policy will aid Nigerians living in rural areas to exchange their old naira notes for new ones from January 23.
In an interview on Saturday, Mr Okhiria said the corporation arrived at the figure using the working document for earnings between January and March.
Mr Okhiria, however, advised passengers wishing to utilise the service to commence updating of their mobile app as from December 3, to enable them to successfully book for the ride.
