Final answer:
To prevent people from voting more than once, implementing a voter identification system, using secure electronic voting machines, and maintaining accurate voter registration records are important.
Step-by-step explanation:
One solution to ensure that people don't vote more than once is to implement a voter identification system. This requires voters to present an identification document, such as a driver's license or passport, before casting their vote. By verifying the identity of the voter, this system helps prevent multiple voting by the same person.
Another alternative is to use electronic voting machines with proper security measures. These machines can be programmed to allow only one vote per person and can also detect any potential irregularities or attempts to vote more than once.
Furthermore, having a comprehensive voter registration system that maintains accurate and up-to-date voter records is crucial in minimizing the chances of duplicate voting.