The SDC issues an invoice. This can be printed by the POS, or on a separate, ordinary printer, and given to the customer. It can also be given as an electronic invoice in pdf format and delivered by e-mail or a messaging app such as Viber, Skype, WhatsApp, etc.

The invoice contains all relevant data on the sale, taxes, and other levies in an easily readable form. The customer can immediately check this information.

The invoice also contains a QR code that can be scanned by the customer to take part in the national lottery.