Prasad said he has asked for 20 EVMs that he will pick randomly from different booths to demonstrate that these can be tampered with.

The commission has reiterated several times that the machines were tamper-proof.

The first attack against the EVMs came from Bharatiya Janata Party (BJP) leader L.K. Advani. Later, other political leaders also voiced their concerns about the reliability of the EVMs used during the April-May Lok Sabha polls.

Since many cases were filed on the matter in various courts, the commission invited those who had approached the courts and political parties to its headquarters in New Delhi to discuss the issue.