1) Maybe in some jurisdictions but not in others. For the most part in the UK we have rooms of people counting and bundling papers. 2) Yes but the people who

1) Maybe in some jurisdictions but not in others. For the most part in the UK we have rooms of people counting and bundling papers. 2) Yes but the people who control those machines don't want to modify them (they want some winners for publicity but mostly losers and they are preconfigured for profit without modification). 3) If the receipt indicates your vote this opens the voter to bribery or coercion. If it doesn't how does it confirm that you vote was correctly recorded. Even if it does indicate your vote it is still non-trivial to confirm the validity of the election from it. You basically need to publish all the votes (with receipt numbers) and anyone whose vote doesn't match their receipt could flag it as rigged. This doesn't do anything to prevent digital ballot stuffing though.