Sampath said the VVPAT system would be introduced in all polling stations of ten Assembly seats within Aizawl city.
"The VVPAT system was not manufactured due to doubts on the EVM, but was part of the upgradation of the system," he said.
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The EVMs have been tested by different people including those who claimed they could be tampered and manipulated with, he said, adding all tests have proved their reliability.
The VVPAT system was first experimented in the Noksen Assembly bypoll recently in Nagaland and Mizoram would be the first state where it would be introduced in a large scale, EC officials said.