I know that no system can eliminate rigging (courtesy of last 2 US presidential elections where votings were e-rigged), however the possibilityof reducing the magnitude of rigging is worth investing into.
I laid my hands on the prospectus come catalogue of the EVM from Electronics Corporation of India Limited (ECIL), going by what they have displayed and the information in this prospectus, I think Nigeria will be better off with it.
This should not stop us from knowing the fact that there will surely be some shortcomings, ranging from e-rigging, multiple voting to miscalculation on the part of the machines. The only way to minimise this is, if all Ballot stations in each ward are connected to one another to one server in each LGA, then subsequently servers from the LGAs linked with one central server from the state, where all results will be released, making the state server the only authorised device to release the results at the state level. There should then be yet another single central server that connects all the state servers in the six geopolitical zones, and finally each of these zone's server connected to one centre server in the Headquarters of the electoral body. Access should be allowed for checks and balances but no modification of inputs and results. The computers should also be able to detect multiple voting and faze them out. As we all know that fingerprints are as unique as each individual, i.e. no two people have the same fingerprint, and it may even help in arresting the electorate who voted more than once). Of course this will require
big-time online but wireless LAN, WAN and Internet, which is will be expensive to run. I can't explain what I mean better than this, experts in computers and ICT should help me out, if you understand what I mean.
If this or something better or related to this is ensured, then we can talk of elections being free and fair, on the basis of computer intelligence. But if na to count station by station (Ballot Station by Ballot Station) manually before results can be announced, then it will be no better from the manual voting system, in fact the manual voting would have been better.
But in general, this will be a giant stride and breakthrough for Nigeria, then the government should be thinking of e-census for accurate counting.