J Khanna: the controlling unit is with the polling... ... Plea For 100% VVPAT Verification Of EVM Votes : Live Updates From Supreme Court

J Khanna: the controlling unit is with the polling officer. The polling unit can take 1000 votes. After every 1000 votes the unit is changed.

So they don’t need to be changed unless there is a malfunction but they are stored together and after the counting they are also kept together?

And then the candidates representatives also sign off?