In America, voting via a computerized voting machine (CVM) is a process in its infancy. Some are very excited; others are skeptical. However, researchers have demonstrated that cleaver hackers can gain control of CVMs to manipulate results.
In order to protect the integrity of elections, these machines need to be regulated to enforce both voting privacy and voting accuracy.
Step 1: Every voter who casts a digital vote gets a randomized code at the polling place.
Step 2: Every voter gets two paper receipts -- one they keep and one they turn in -- containing only their code and for whom they voted.
Step 3: Spreadsheets of codes and votes are published so people can confirm that their vote was counted accurately.
Step 4: If a person's receipt doesn't match the published vote: investigate.