Deputy Election Commissioner Sudeep Jain, Election Commission of India on November 10 said that Electronic Voting Machines (EVMs) are robust and tamper-proof and the Apex Court upheld the integrity of the machines. "It has been clarified time and again that EVMs are robust and tamper-proof. Supreme Court upheld integrity of EVMs more than once. EC had also offered EVM challenge in 2017. Integrity of EVMs is without any doubt and merits no further clarification," he said.