What are VVPATs, how do they work and why is Opposition demanding more machines in Lok Sabha polls?

The Supreme Court has issued a notice to the Election Commission regarding a PIL submitted by activist Arun Kumar Agrawal on EVMs, calling for comprehensive VVPAT verification. Agrawal argues for simultaneous verification and increased personnel to speed up the process. Concerns include discrepancies between EVM and VVPAT counts. This issue has been raised previously in court, with varying outcomes. VVPATs provide voters with a paper trail to verify their vote alongside EVMs.
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