 Officials responsible for maintaining the veracity and accuracy of elections such as election commissioners or county auditors, can randomly select a voting block such as a precinct to verify the optical scanning voting system tabulation and report is accurate by doing a hand count against the machine's results.By performing such an audit, election officials can confirm the system is in good standing.Or, if an error in the counting is discovered during a random audit of the machine(s), a full recount can be conducted, and the system evaluated for the source of failure or fraud.