• The Union Cabinet chaired by the Prime Minister Shri Narendra Modi has given its approval for procurement of Voter Verifiable Paper Audit Trail (VVPAT) Units for use in the General Elections, 2019.
• VVPAT device functions like a printer to be attached to the ballot unit and kept inside the voting compartment. When the voter presses the button against the name of the candidate of his choice on the Ballot Unit, the VVPAT unit generates a paper slip, called Ballot Slip. 
• This paper slip contains the name, serial number and symbol of the chosen candidate. 
• The voter can see this slip through a screened window where it stays for seven seconds, and then it automatically gets cut and falls down into a sealed drop box.
• In this process, the slip will not go into the hands of the voter nor will others be able to see it.

Source:PIB