Electronic check conversion is a process in which your check is used to make a one-time electronic payment from your account--an electronic fund transfer. The check itself is not the method of payment.
When you provide your check, you must be given notice that information from your check may be used to make an electronic payment from your account. The notice is required by the federal law that applies to electronic fund transfers, the Electronic Fund Transfer Act, and by the Federal Reserve Board's Regulation E.