They print a paper ballot that's compared to the digital ballot to ensure the tally is accurate.
Okay so what’s the point then? Redundancy?
It allows the voter to confirm that their vote was accurately captured and tabulated.
No, if it also uses paper ballots, why digital also?
The digital votes are used for the primary tally, and the paper receipt allows the voter to ensure their vote was accurately recorded, and is also used for auditing. It's a hard confirmation that the votes were accurately tabulated, and that the results are accurate.
yes. machine counting is faster, so you get the results fast. Counting paper is slow, so you only do it for a few random machines just to audit the results, or if someone complains about a specific machine.
That's trust me bro with extra steps.