At issue is the ability to verify that only properly registered voters did indeed vote and voted only once. Although no one disagrees with the need for such authentication, there is debate over whether electronic voting machines can create adequate can create audit trails without risking the loss of voter's anonymity. There is also debate about the overall security and reliability of electronic voting. Some security experts suggest that election officials adopt the methods used by the state of Nevada to ensure that electronic gambling machines operate honestly and accurately, which include the following: