EVD systems streamline voucher distribution for telecom and electricity companies, enabling expanded networks and effective sales monitoring. They replace scratch cards with secure E-voucher receipts, managing PINs from the server to POS terminals for both online and offline transactions. EVD solutions offer comprehensive sales, stock, and reconciliation reports for operators and merchants. Key features include offline PIN storage, on-demand voucher sales, data synchronisation, online and USB updates, multi-type report generation, and secure, encrypted operations.