CDC voucher is like any other kind of voucher, sold in fixed denomination $10, $50 %100 etc and top up the difference in cash, with fixed denomination it is easier to account for , this is a simple system has worked well for many years by departmental stores....... with E wallet type of setup, there will bound to be odd balances left in the account eg. $0.73 then KP again gov cheat money cannot spend the bal inside the wallet.....chao singkies really like to complain ....everything also gov must give hand to mouth....aiyo.